Although both br3- and i3- ions are known, the f3- ion has not been observed. explain.

Answers

Answer 1
Fluorine, iodine and bromine are all in the same group. Fluorine been the first element in the group has less number of electron orbitals compare with bromine and iodine. Bromine and iodine has D orbitals which can take part in their bonding activities, this allows the elements to bond in a variety of ways, but fluorine does not have the D orbital and therefore is limited in its ion formation. 
Answer 2

The F3- ion has not been observed because fluorine has an extremely high electron affinity and does not form stable anions.

Fluorine is the most electronegative element, meaning it has an extremely high ability to attract shared electrons in chemical bonds. The electron affinity of fluorine is the highest among all elements, at 328 kJ/mol. This extremely high electron affinity makes it very difficult for fluorine to accept additional electrons to form anions, as it would require overcoming the strong repulsive forces between the incoming electrons and the tightly bound electrons already present in the fluorine atom.In contrast, bromine and iodine have lower electronegativities and electron affinities compared to fluorine, allowing them to form stable anions like Br3- and I3-. These heavier halogen elements can more readily accommodate the additional electrons in their larger atomic sizes and higher energy levels. However, the small size and tightly bound electrons of the fluorine atom make it virtually impossible for it to form a stable F3- ion under normal conditions.

Related Questions

What are intelligent buildings designed to do?

Answers

to withstand the winds placed upon them by an earthquake ect. this is from what I've learned in simplest form
they're designed to withstand strains placed upon them by natural disasters, i.e earthquakes. 



hope this helps :)

When a drug blocks reuptake or breakdown of a neurotransmitter by the action of enzymes, the drug is acting as an _____?

Answers

SNRI- Selective neurotransmitter reuptake inhibitor. Drugs that have use this mechanism of operation can increase the presence of the targeted neurotransmitter in a subject as more of the neurotransmitter remains freely available. This class of drugs is commonly used in the treatment of depression and other maladies where neurotransmitter levels can affect subject outcomes.

Which parts make up the major components of the peripheral nervous system autonomic?

Answers

what is autonomic bruh

The thyroid hormone that regulates carbohydrate metabolism is

Answers

thyroxine/thyroxin. I hope this helps! :)
Final answer:

Thyroxine, produced by the thyroid gland, is the hormone that regulates carbohydrate metabolism in the body. It helps to break down glucose and maintain stable blood sugar levels. Fluctuations in thyroxine levels can affect the body's carbohydrate metabolism rate and energy production.

Explanation:

The thyroid hormone that regulates carbohydrate metabolism is thyroxine. The thyroid gland produces this hormone and it plays a crucial role in body's metabolic processes. Thyroxine helps to break down glucose and maintain stable blood sugar levels, thus controlling carbohydrate metabolism in our body.

For instance, when the level of thyroxine in the bloodstream is high, the rate of carbohydrate metabolism increases, thereby providing the body with more energy. Conversely, when the level of thyroxine is low, carbohydrate metabolism slows down leading to less energy production and increased fat storage. Thus, any imbalance in thyroxine levels can impact the body's ability to metabolize carbohydrates.

Learn more about Thyroxine here:

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The phenotype frequency in a population changes after each generation. which would most likely be causing this? apex

Answers

organisms compete for shelter---------->apex

organisms compete for shelter is correct

Which of the following is not an example of a molecule?

A. KOH
B. H2S
C. 03
D.Mn

Answers

Answer:

Mn is the answer

Explanation:

Mn is not an example of a molecule. Mn represents the chemical symbol for the element manganese, the correct option is D.

Mn is the chemical symbol for the element manganese, and it is not an example of a molecule. In the context of chemistry, elements are the basic building blocks of matter, and they consist of only one type of atom. Manganese is an element with atomic number 25, and its chemical symbol is Mn.

Molecules, on the other hand, are formed when atoms of different elements combine through chemical bonds. For instance, [tex]H_2O[/tex] (water) is a molecule made up of two hydrogen atoms and one oxygen atom. Therefore, Mn, being a single atom representing an element, is not a molecule, the correct option is D.

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The importance of carbon which reason best explains why carbon is able to form macromolecules?

Answers

 Carbon is found in all living things is the reason that why carbon is able to form macromolecules.
you do not have the reasons listed, so i came up with my own

A(n) ______ is the smallest unit of an element that maintains the properties of that element.

Question 2 options:

molecule


nucleus


atom


particle

Answers

Particle or Subatomic particle

Name the two kingdoms that only contain prokaryotes.

Answers

the two kingdoms are eubaterica and archaea

He confucian classics viewed natural disasters such as floods or earthquakes as evidence of what?

Answers

The Confucian classic viewed natural disaster such as floods or earthquakes as evidence of the poor political decision. Central to Confucianism is that the moral harmony of the individual is directly related to cosmic harmony; what one does affect the other.  Between the physical and the moral evidenced is the example of direct correlation.

When body temperature rises, a center in the brain initiates physiological changes to decrease the body temperature. this is an example of diagnostic regulation. positive feedback. negative feedback. nonhomeostatic regulation. fever?

Answers

This is negative feedback. In this case, the body is creating a response to a stimulus that will cause that stimulus to go away. By putting mechanisms into place that reduce body temperature, the overheating is being caused to abate.

When body temperature rises, a center in the brain initiates physiological changes to decrease the body temperature. this is an example of negative feedback.

Further explanation

A normal human's body temperature is 37°C. A center in the brain initiates physiological change to help maintain our body temperature is called hypothalamus. The main job of the hypothalamus is to maintain homeostasis and to control certain hormones.  

When we are exercising, the hypothalamus senses that you are too hot, then it sends signals to your sweat glands to make you sweat and cool you off. When the hypothalamus senses that you are too cold, it sends signals to your muscles that make you shiver and create warmth.

Maintenance of homeostasis usually involves negative feedback loops. Negative feedback is a reaction that causes a decrease in function. It occurs in response to some kind of stimulus.

On the other hand, positive feedback loops are usually found in processes that need to be pushed to completion, for example in the process of childbirth. The neurons send a signal that leads to release of the hormone oxytocin from the pituitary gland. The positive feedback continues until the baby born.

Learn more

Hypothalamus https://brainly.com/question/410831

Maintaining body temperature https://brainly.com/question/1196542

Keywords: negative feedback, body temperature, maintaining body temperature

Neurons in virtually every brain area use these neurotransmitters to communicate with other neurons. they are

Answers

Neurons in virtually every brain area use these neurotransmitters to communicate with other neurons. they are INTERNEURONS

The S-P interval of seismic waves recorded at a seismometer is 8 minutes. Approximately how far away is the earthquake’s epicenter from the seismometer? [equation: (S-P interval) = 0.00146 (distance to epicenter)]
a.8 km b. 550 km c. 5,500 km d. less than 1 km 12.

Answers

According to the equation the correct answer with the interval registered in minutes is: C
8=0.00146 (distance to epicentre) <=> distance to epicentre=8÷0.00146 <=>5479,45 km

The correct answer would be 5,500!!

Which statement best describes the difference between strong nuclear forces and weak nuclear forces? (1 point)

Weak nuclear forces are involved when certain types of atoms break down. Strong nuclear forces are responsible for holding atoms together.
Weak nuclear forces hold bonds between atoms together. Strong nuclear forces hold together the nucleus of an atom.
Strong nuclear bonds prevent atoms from falling apart. Weak nuclear bonds prevent compounds from falling apart.
Strong nuclear forces are involved in breaking electrons from their shells. Weak nuclear forces hold protons in the nucleus.

Answers

The correct answer is: Weak nuclear forces are involved when certain types of atoms break down. Strong nuclear forces are responsible for holding atoms together.

Answer:

That would be the first option! (A)

Weak nuclear forces are involved when certain types of atoms break down. Strong nuclear forces are responsible for holding atoms together.

Explanation:

A new drug is discovered for the treatment of thyroid cancer. Which is a logical next step of the scientific method after the discovery has been successfully tested?


sharing the data with other scientists

testing the drug on people

testing the drug on animals

keeping the information private

Answers

sharing the data with other scientists

other scientists would have to successfully test it too

one person is not enough

hope this helps

Answer;

-Sharing the data with other scientists.

Explanation;

-Data sharing encourages more connection and collaboration between researchers, which can result in important new findings within the field. In a time of reduced monetary investment for science and research, data sharing is more efficient because it allows researchers to share resources.

-It also provides instructions so that other researchers can repeat the experiment or build on it to verify and confirm the results.

The hypothesis that the great serpent mound may relate to halleys comet is bolstered by

Answers

People depended on the Tigris and the Euphrates rivers. Irrigation transformed the original hunter-gatherers into small farming communities. -Metallurgy and began to replace stone and bone tools and weapons with metal, thus marking the end of the Stone Age and the beginning of the Bronze Age. It required the mining of ores, specialized technical training, and skilled artisans.

Which sign of pregnancy may manifest as an increase of urinary frequency in the client?

Answers

When a woman is pregnant, her uterus expands and presses on the bladder, and extra blood flow makes her kidneys produce up to 25% more urine.

When compounds that are formed from ionic bonds decompose, the products are usually _____. atoms of the original reactants simple molecules ions of the original elements of no further chemical value

Answers

ions of the original elements 
Answer;

-Ions of the original elements

When compounds that are formed from ionic bonds decompose, the products are usually ions of the original elements.

Explanation;Ionic bonds are bond that are formed by metals and non metals, where metals loose electrons while non metals gain electrons to form stable atoms.The loss of electrons by metals results to formation of cations (positively charged ions) while the gain of electrons by non metals results to formation of anion (negatively charged ions). When they combine they form ionic compoundsWhen these ionic compounds decompose they form ions of original metal. For example NaCl which is an ionic compound will decompose to form sodium ions and chloride ions.

What is the purpose of implantation pregnany?

Answers

I think this is the answer...but if this wrong sorry i don't know other answer

What is the difference between an aldose sugar and a ketose sugar? what is the difference between an aldose sugar and a ketose sugar? the position of the carbonyl group one is a ring form; the other is a linear chain. the number of carbons the position of the hydroxyl groups?

Answers

The position of the carbonyl group.

Both aldoses and ketoses are monosaccharides. They are simple sugars with a Carbon chain. The difference is what's in the position of the carbonyl group: aldoses have an aldehyde group while ketoses have aketone group.

Final answer:

An aldose sugar has a carbonyl group at the end of its carbon chain, while a ketose sugar has this group in the middle. This structural variation corresponds to aldehydes in aldoses and ketones in ketoses, with examples including glucose for aldoses and fructose for ketoses.

Explanation:

The difference between an aldose sugar and a ketose sugar lies in the position of the carbonyl group within their molecular structure. Aldoses have a carbonyl group at the end of the carbon chain, making them aldehydic, while ketoses have a carbonyl group in the middle of the carbon chain, making them ketonic. Examples of aldoses include glucose, galactose, and ribose; whereas ketose examples include fructose and dihydroxyacetone.

In an aldose, the carbonyl group is bonded to at least one hydrogen atom, which is typical of aldehydes. In ketoses, the carbonyl group is bonded to two carbon atoms, which is characteristic of ketones. This structural difference is crucial in the classification and function of these sugars within biological systems.

What part of the brain triggers a head movement in response to a loud sound in the environment?

Answers

The part of the brain that triggers a head movement in response to a loud sound in the environment is the Inferior Colliculus. It served as a main auditory center for the body. It is a channel of all auditory signals of the human body. It is a receiver of the necessary information from different sources. 


The brain stem, particularly through the brain stem reflex, is responsible for triggering a head movement in response to a loud sound, after the inner hair cells of the cochlea in the auditory system detect the sound and send signals via the auditory nerve.

The part of the brain that triggers a head movement in response to a loud sound is primarily the brain stem, specifically the reflex pathways within it. When a loud sound occurs, it is detected by the inner hair cells in the cochlea of the auditory system. These cells convert the sound vibrations into electrical signals that are transmitted to the auditory nerve. This auditory information then reaches the brain stem where an automatic response, the brain stem reflex, is initiated to draw attention to the sound. This reflex can lead to various reactions, including turning the head toward the sound source.

A ____________ serves as a wrapping around largely mobile joints and secretes synovial fluid that serves to lubricate joint movement.

Answers

Synovial membrane. The synovial membrane secretes synovial fluid into synovial cavity, which lubricates the joint movements by reducing friction between the ends of bones.

A substance received or given off by your body will likely pass through which type of tissue?

Answers

Epithelial tissue. The epithelial tissue is the interface of our body with the external world. Everything that enters into our body that's not through puncturing, or something that breaks through tissue, will firstly enter into contact with an epithelial tissue and then is, or is not, absorbed. The same happens whenever the body releases something to its exterior.

In which stages of meiosis are the chromosomes considered tetrads?

Answers

In the first stage of meiosis, prophase I, tetrads are formed.

After a rap concert, as dominique walks out into the fresh air, she notices her ears are ringing. this ringing indicates possible damage to the hair cells of her _____ membrane.

Answers

This ringing indicates possible damage to the hair cells of her basilar membrane. The basilar membrane is a stiff structural element that separates two liquid-filled tubes that run along the coil of the cochlea within the cochlea of the inner ear, the scala media and the scala tympani.

Define and understand what isomers are

Answers

Isomers are each of two or more compounds with the same formula but a different arrangement of atoms in the molecule and different properties.

A group of individuals of the same species that are capable of interbreeding is called a

Answers

A population is a group of individuals of the same species that are capable of interbreeding. 

Monosaccharides are building blocks of larger carbohydrates.

True
False

Answers

The answer to this is true. 

What did charles darwin hypothesize about the origin of bipedalism?

Answers

Charles Darwin has the first or the origin of the bipedalism hypothesis.  Human beings are compared to apes and he also suggested enormous brain and upright locomotion were link. He also suggested human evolved into larger brains when still ape-like-tree-dwellers. Humans are bipedal because they have free hands to carry and manipulate tools and having tool-use, lost their project canning.

Final answer:

Charles Darwin posited that humans evolved from great apes and that bipedalism involved complex anatomical changes. The savanna hypothesis suggests bipedalism was an adaptation to a savanna habitat, with Homo erectus showing efficiency in bipedal locomotion almost equal to modern humans.

Explanation:

Charles Darwin hypothesized about the origin of bipedalism as part of his broader theory of evolution outlined in The Descent of Man. He argued that humans are descended from other hominids like the great apes. Darwin's ideas led to the development of modern biological science and the understanding that the evolution of bipedalism required complex anatomical changes, like the angling of the femur, the evolution of spinal curves, and the realignment of the toe.

Some of the hypothesized advantages of bipedalism included the ability to free hands for tool use, improved energy efficiency, and better thermoregulation by exposing more of the body's surface to the environment. The savanna hypothesis suggests that bipedalism evolved as an adaptation to a savanna habitat. The concepts of the stance leg and step leg are central to understanding bipedal locomotion, with anatomical changes evident in early hominins indicative of this mode of movement.

The most striking evidence of early hominin bipedalism was discovered by Mary Leakey with the Laetoli footprints depicting a modern striding gait. Over time, hominin species such as Homo erectus developed anatomical features that made them nearly as efficient at bipedal locomotion as modern humans. These findings underscored the fundamental shifts in early human ancestors that facilitated upright walking.

Jack believes that mental illness is a disease with biological causes, remedied primarily by treating the patient. which model of mental illness does jack believe in?

Answers

Due to the fact that Jack believes in biological causes of mental illness of the four main models of mental illness Jack believes in the biological or medical model of abnormality which ascribes mental instability to Serotonin levels or other biological factors that can not be controlled by the sufferer.

Jack subscribes to the medical model of mental illness, which attributes mental health issues to biological causes and treats them through medical interventions. This approach contrasts with Thomas Szasz's view, which criticized the mere labeling of behaviors as mental illnesses without identifying specific biological causes.

Jack believes in the medical model of mental illness. This model treats mental health issues as diseases with biological causes and focuses on treatment through medical means, such as medications or brain intervention techniques. The medical model has been historically successful in treating various biological disorders and is based on identifying a biological or physical abnormality as the cause of symptoms. Although this model has its critics, such as Thomas Szasz who suggested that mental illness labels are just pseudo-explanations for behavior, it remains one of the main methods of diagnosing and treating mental disorders.

For instance, the Diagnostic and Statistical Manual of Mental Disorders (DSM) compiled by the American Psychiatric Association lists mental illness disease labels and criteria for diagnoses. Despite these labels focusing primarily on observed behaviors and not on specific biological causes, they still provide valuable information regarding prognosis and treatment options. In essence, the medical model is one that interprets mental health issues as primarily being biological in nature and thus best treated through medical interventions.

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