A family of elements that has two electrons in its outer energy level is the

Answers

Answer 1

2nd group of the periodic table

Answer 2

alkaline earth metals

Related Questions

Petroleum contains multiple components with different boiling points. Explain how this process can be used in separating petroleum into its separate components?

Answers

Since the components has different boiling points, they're not chemically combined together. They can be separated by physics methods.
One method that suits this case is using fractional distillation.
The petroleum can be cooled down into liquid, then, it will be slowly heat up. When we heat it up, since different components has different boiling points, certain components boils off first, instead of all liquid. Therefore we can catch different components when they boils off one by one once they reach the boiling points.
However, note that this is not simple and has to be done in fractional distillation plants in large areas.

The bond between oppositely charged ions is a(n) ______ bond.
a.ionic
b.polar
c.hydrogen
d.covalent

Answers

ionic
The question gave clues that it is about ions

What is the chemical name for a compound with the formula ba3n2?

Answers

barium nitride

copy the name of the metal as it is written in the periodic table and the first part of the name of the nonmetal (nitrogen) and replace the end by "ide"

The chemical name for a compound with the formula Ba3N2 is barium nitride.

Barium nitride is composed of the element barium (Ba) and the element nitrogen (N). The subscript "3" indicates that there are three barium atoms, and the subscript "2" indicates that there are two nitrogen atoms in the compound.

The naming of ionic compounds, such as barium nitride, follows a specific pattern. The name of the cation (positively charged ion) is stated first, followed by the name of the anion (negatively charged ion).

Thus, the name "barium nitride" accurately describes the composition of the compound Ba3N2, indicating that it consists of three barium atoms and two nitrogen atoms bonded together.

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What is the formula for the binary compound of aluminum and nitrogen?

Answers

This would be AlN, or aluminum nitride.

Hope this helped! :)

What part of the periodic table tells you the number of protons found in the nucleus of the atom of that element?

Answers

Elements are arranged by their atomic number, which is also the number of protons they have.

Final answer:

The atomic number on the periodic table indicates the number of protons in the nucleus of an atom of that element, defining its identity. This number is usually found at the top of the element's square on the table, allowing for easy identification and distinction between elements.

Explanation:

The atomic number on the periodic table tells you the number of protons found in the nucleus of the atom of that element. Each element on the periodic table has a unique atomic number, which is usually displayed at the top of the element's square.

This number is crucial because it defines the identity of the element; for instance, hydrogen has an atomic number of 1, meaning all hydrogen atoms have 1 proton in their nucleus. Similarly, helium has an atomic number of 2, indicating that every helium atom has exactly 2 protons in its nucleus.

The periodic table arranges elements in increasing atomic number, and this is the characteristic that makes each element unique compared to all others.

By looking at the periodic table, you can determine the atomic number of an element, and thus know how many protons its atoms contain. This makes the periodic table an indispensable tool for scientists and students alike.

As magma cools all of the mineral grains form at the same temperature is this true or false

Answers

Hello there,
The answer for your question is true

Hope this helps :))

~Top

Difference between a proton, electron and neutron and where they are located

Answers

A proton has a positive charge, a neutron has a neutral (no charge) charge, and an electron has a negative charge. The protons and neutrons are in the center of the atom and they make up the nucleus. The electron is moving around outside of the nucleus.

Eyewash stations should be installed within 25 feet of hazard locations. True or False

Answers

The answer to this question would be: False
Occupational Safety and Health Administration (OSHA) states that the eyewash station should be located "within the work area" and it was interpreted as 10 feet unimpeded travel distance from the hazard location. This distance is calculated in order to avoid potential mixture of substance between the eyewash station and the one that exist on hazard location.

In water, naoh almost completely separates into na+ and oh- ions. thus, naoh is _____.

Answers

In water, naoh almost completely separates into na+ and oh- ions. thus, naoh is Stong base.
Strong bases and strong acids completely ionized in the water,So when NaOH is added into water, it is completely ionized and forms Na+ and OH- ions and it shows that it is a strong base.

In which state of matter would the molecules be closest together? a solid a cold liquid a warm liquid a gas?

Answers

A solid.
As you slowly go from the solid state to the gas, the molecules within spread farther and farther away.

Solid molecules will be closest together.

Hope this helped. Have a great day! :D

Iron(111) chloride, fec13 , can be made by the reaction of iron with chlorine gas. how much iron, in grams, will be needed to completely react with 58.0 g of c12

Answers

The balanced chemical equation that describes this reaction is:
2Fe + 3Cl2 ............> 2FeCl3

Using the periodic table:
molar mass of iron III = 55.845 grams
molar mass of chlorine = 2*35.453 = 70.906 grams

From the balanced equation above, 2 moles of iron are required to react with 3 moles of chlorine.
This means that:
2*55.845 = 111.69 grams with iron are required to react with 3*70.906 = 212.718 grams of chlorine.
To know the amount of iron needed to react with 58 grams of chlorine, we will simply use cross multiplication as follows:
mass of iron = (58*111.69) / (212.718) = 30.45355 grams

An atom has 40 electrons and 46 neutrons. how many protons does it have?

Answers

Atoms have equal numbers of protons and electrons. So it have 40 protons.

what percentage do the elements hydrogen and helium account for in the universe? A. 100% B. 99.9% C. 98% D.99.8%

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c. 98% this worlds atmostphere is mostly nitrogen tho

The percentage is 99.8% so D

What subatomic particle is responsible for combining the atoms together to form a new substance?

Answers

The answer to this question would be: electron

When atoms bind together, that mean they shared at least one electron. The electron is located on the outer side of the atoms so the electron from an atom can collide with other electrons from another atom. The protons and neutron can't make bind because it was in the middle of the atom and won't collide each other.

Answer : Electrons.

Explanation : The subatomic particle which is responsible for combining the atoms together to form a new substance is ELECTRON.

Electrons are negatively charged tiny particles which are found outside the nucleus and is one of the three subatomic particles. These are responsible for formation of new substance through transfer or sharing of electrons between the atoms of the elements. Mainly the outermost revolving electrons are the ones which undergoes transformation and forms new substance. It influences many physical and chemical properties of the substances.

Magnesium and nitrogen react in a combination reaction to produce magnesium nitride: 3 mg + n2→ mg3n2 in a particular experiment, a 10.1-g sample of n2 reacts completely. the mass of mg consumed is ________ g.

Answers

The mass of Mg consumed is approximately 26.28 g.

The balanced chemical equation for the reaction between magnesium (Mg) and nitrogen ([tex]\rm N_2[/tex]) to produce magnesium nitride ([tex]\rm Mg_3N_2[/tex]) is:

[tex]\rm \[3 \text{Mg} + \text{N}_2 \rightarrow \text{Mg}_3\text{N}_2\][/tex]

Given:

Mass of [tex]\rm N_2[/tex] = 10.1 g

Molar mass of [tex]\rm N_2[/tex] = 28.02 g/mol (molar mass of nitrogen)

Using stoichiometry, we can determine the moles of [tex]\rm N_2[/tex]:

Moles of [tex]\rm N_2[/tex] = Mass / Molar mass = 10.1 g / 28.02 g/mol ≈ 0.3602 mol

From the balanced equation, we see that 3 moles of Mg react with 1 mole of [tex]\rm N_2[/tex] to produce 1 mole of [tex]\rm Mg_3N_2[/tex].

Therefore, the moles of Mg consumed are: Moles of Mg = 3 * Moles of [tex]\rm N_2[/tex] = 3 * 0.3602 mol = 1.0806 mol

The molar mass of Mg is 24.31 g/mol (molar mass of magnesium), so the mass of Mg consumed is:

Mass of Mg = Moles of Mg * Molar mass = 1.0806 mol * 24.31 g/mol ≈ 26.28 g

Therefore, the mass of Mg consumed is approximately 26.28 g.

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Final answer:

In this reaction, 3 mg of magnesium reacts with nitrogen gas to produce magnesium nitride. The mass of Mg consumed is 26.3 g.

Explanation:

In the given reaction, 3 mg of magnesium reacts with nitrogen gas (N2) to produce magnesium nitride (Mg3N2). To determine the mass of Mg consumed, we need to calculate the molar mass of Mg and the molar ratio between Mg and N2. The molar mass of Mg is 24.31 g/mol. Since the balanced equation shows a 3:1 ratio between Mg and N2, we divide the mass of N2 (10.1 g) by the molar mass of N2 (28.01 g/mol) to get the moles of N2 and then multiply that by the molar ratio to find the moles of Mg consumed. Finally, we multiply the moles of Mg consumed by the molar mass of Mg to get the mass consumed.

Calculation:
Mass of N2 = 10.1 g
Molar mass of N2 = 28.01 g/mol
Moles of N2 = (mass of N2) / (molar mass of N2) = 10.1 g / 28.01 g/mol = 0.3608 mol
Moles of Mg consumed = (moles of N2) x (molar ratio) = 0.3608 mol x 3/1 = 1.0824 mol
Mass consumed = (moles of Mg consumed) x (molar mass of Mg) = 1.0824 mol x 24.31 g/mol = 26.3 g

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All our sources of fresh water, like rivers, wells, and aquifers, are dependent on

Answers

The water cycle is what it depends on

Answer: The Water Cycle

I hope this helps!

in a cell protein synthesis is the primary function of

Answers

Ribosomal RNA (rRNA) associates with a set of proteins to form ribosomes. These complex structures, which physically move along an mRNA molecule, catalyze the assembly of amino acids into protein chains. They also bind tRNAs and various accessory molecules necessary for protein synthesis.

Which shows the correct relationship between the molecular formula and the empirical formula for C2H10N2

Answers

The correct answer is molecular formula = 2 x empirical formula

The given compound C2H10N2 is the molecular formula because the ratios of the elements are not reduced into lowest terms (empirical formula). To get the empirical formula, the ratios must be reduced to the smallest possible integral ratio which gives CH5N. As a result, the ratio between both formulas is 2.

How did atomists describe fire?

Answers

They explained it up be one of the four naturally occurring elements

As element of group 1 on the periodic table are considered in order of increasing atomic radius, the ionization energy of each successive element generally, A. Decreases B. Remains the same C. Increases

Answers

Answer:

The ionization energy of each successive element generally decreases

Explanation:

The ionization energy increases in the periods of the periodic table and decreases in the groups. If the atom is very small, we will need a lot of energy to release the electron, while if the atom is larger the energy will be greater.

As the atomic radius increases, the ionization energy of the elements ; ( A )

Decreases

As we move across the periods in the periodic table ,the ionization energy of the elements increases relatively, while as we go down the Groups in the periodic table the atomic radius increases while the ionization energy decreases as well.

Therefore the elements of group 1 on the periodic table will experience a decrease in ionization energy as we go down the group.

Hence we can conclude that as the atomic radius increases, the ionization energy of the elements will decreases.

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What does it mean when substance are move against a concentration gradient?

Answers

It means they are diffusing or going from an area with a higher concentration to an area of a lower concentration of that same substance.

The cell theory was A. developed by Robert Hooke. B. developed before microscopes were invented. C. developed only after electron microscopes became widely used. D. developed by many scientists over many years.

Answers

Answer: D. Developed by many scientists over many years

Explanation: this is the correct answer

How does a negative ion differ from a positive?

Answers

A negative ion or anion is an electrically charged atom or group of atoms that are formed by gaining one or more electrons. Whereas a positive ion or cation is an electrically charged atom or group of atoms that are formed by losing one or more electrons.
The losing and gaining all occurs on the outermost shell.

How many electrons can the 7th energy level hold?

Answers

the equation is (n×n)×2. the 7th one can hold 98.

Name the stellar process in which the fusion of hydrogen produces other elements.

Answers

Hydrogen fusion generates the energy for proton - proton chains and the carbon nitrogen oxygen cycle. It is the nuclear fusion of 4 protons to form a helium 4 nucleus.

Final answer:

Nucleosynthesis is the stellar process in which the fusion of hydrogen produces other elements, such as helium. This process occurs through the proton-proton chain reaction in stars like the Sun.

Explanation:

The stellar process in which the fusion of hydrogen produces other elements is called nucleosynthesis. During nucleosynthesis, hydrogen nuclei (protons) combine to form helium nuclei in a process known as the proton-proton chain reaction. This is an important example of nuclear fusion that occurs in the Sun and other stars, and it is responsible for the production of energy and the creation of heavier elements.

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A solution of potassium (k2cro4) when added to a solution of lead(ii) acetate (pb(ch3coo)2 produces a yellow precipitate of lead(ii) chromate. what type of reaction is it?

Answers

Let's write the balanced chemical reaction for this:

K₂CrO₄ + Pb(CH₃COO)₂ --> PbCrO₄ + 2 CH₃COOK

The products are lead(ii) chromate and potassium acetate. As you can notice, there is an exchange of ions involved for both reactants. This type ofreaction is called the double-replacement reaction or also called metathesis.

Final answer:

The given reaction is an example of a double displacement reaction, specifically a precipitation reaction, where the potassium and lead ions swap positions resulting in the formation of lead(II) chromate precipitate.

Explanation:

The given reaction, whereby a solution of potassium (K2CrO4) is added to a solution of lead(II) acetate (Pb(CH3COO)2) resulting in the formation of a yellow precipitate of lead(II) chromate (PbCrO4), is an example of a double displacement reaction, also known as a precipitation reaction. In double displacement reactions, the cations and anions in two different compounds switch places, leading to the formation of a new compound(s). In this case, the potassium and lead ions swap their positions resulting in the formation of lead(II) chromate precipitate.

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By what two characteristics are all the elements of the periodic table placed in a particular row and column

Answers

Rows are defined as which shell of the element contains the outermost electrons. As the rows increase, the outermost shell value increases, as well. The columns are defined as which block contains those outermost electrons, and the shape at which that orbital takes.

What is a sample of matter that has definite physical and chemical properties?

Answers

should be solid , because a liquid has no definite shape and gas has neither just chemical properties

The pk1, pk2, and pkr for the amino acid glutamate are 2.1, 9.5, and 4.1, respectively. at ph 11.0, glutamate would be charged predominantly as follows:

Answers

there are no answer choices

which of the following has the smallest atomic radius: Mg2+, Mg, Ca2+, or Ca?

Answers

The appropriate response is Mg2+. It has the smallest radius the would mean the littlest separation from it's the furthest shell to the core
Since magnesium has one less shell that calcium, Mg would have a little nuclear range. Besides, a particle of a component will have a little nuclear sweep than it's molecule be utilized as a part of its particle frame it has lost a shell

Answer:

Mg2+

Explanation:

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