Explain, in terms of atomic structure, why the radius of an Na atom is larger than the radius of an Na+ ion.

Answers

Answer 1

Answer: In a Naatom, there are 11 protons controlling 11 electrons by electrostatic attraction. In Na+ there are 11 protons controlling 10 electrons (you lost one to give Na+), so they can pull them in tighter!!

Related Questions

The concentration of an acid or base is defined as the ratio of the amount ofO A. solvent to the amount of solute in a solutionO B. conjugate acid to conjugate baseO C. conjugate base to conjugate acidOD. solute to the amount of solvent in a solution
A 134.0 g sample of an unknown metal is heated to 91.0⁰C and then placed in 125 g (125 mL) of water at 25.0⁰C. The final temperature of the water is measured at 31.0⁰C. Calculate the specific heat capacity of the unknown metal.
Compared to the atoms of nonmetals in period 3, the atoms of metals in period 3 have1. fewer valence electrons 2. more valence electrons 3. fewer electron shells4. more electron shells
Which missing item would complete this beta decay reaction?
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Each type of mineral has a chemical composition that isA. unique to that mineral
B. similar to other minerals
C. variable depending on where its found
D. influenced by heat and light

Answers

Answer: C. variable depending on where its found

The chemical compositions of minerals is very necessary in order to define or describe a certain mineral. Some minerals can be written in simple chemical formula while others are also written in complicated chemical formulas.

If a population grows larger than the carrying capacity of the environment, which of these is most likely to happen?A. The death rate may rise.
B. The birthrate may rise.
C. The death rate must fall.
D. The birthrate must fall.

Answers

The answer is A. The death rate may rise. Carrying capacity is the total number of organisms that an environment can support. So, if a population grows larger than the carrying capacity of the environment, there will be more organisms than the environment can support. The environment cannot sustain this number, so organisms will die until the population is under the carrying capacity. So, the death rate may rise to reduce the population size.

If a population grows larger than the carrying capacity of the environment, the most likely to happen is:

A. The death rate may rise.

When a population grows larger than the carrying capacity of the environment, the resources available to the population will be depleted. This can lead to a decrease in the availability of food, water, and shelter. As a result, the death rate may rise.

The birthratemay also rise, but this is less likely. If the resources are already depleted, there may not be enough food and water to support a larger population. In addition, the stress of living in a crowded and resource-depleted environment may lead to an increase in stress-related deaths.

The other options, B. The birthrate may rise, C. The death rate must fall, and D. The birthrate must fall, are incorrect. The birthrate may rise, but it is not guaranteed. The death rate may fall, but it is not necessary. The most likely outcome is that the death rate will rise.

This is a concept known as carrying capacity, which is the maximum population size that an environment can sustain indefinitely. When a population exceeds the carrying capacity, the population will eventually crash. This can happen through a number of mechanisms, including starvation, disease, and conflict.

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What does the exosphere do??

Answers

In the case of bodies with substantial atmospheres, such as Earth's atmosphere, the exosphere is the uppermost layer, where the atmosphere thins out and merges with interplanetary space. It is located directly above the thermosphere.

The Exosphere is the outer layer of the earths atmosphere but the exosphere is pretty much outer space and it has satellites orbiting.

Which of the following is the smallest volume? A. 2500 mL B. 250 cm3 C. 2.5 x 10-2 L D. 25 m3

Answers

The answer is c. 2.5*10-2 L. The unit cm3 is equal to mL. m3 is equal to 10^3 L. L is equal to 1000 mL. So after you change all the number to the same unit, you can get the result.

Final answer:

Among the given figures, 2.5 x 10-2 L (or 25 mL when converted to milliliters) is the smallest volume.

Explanation:

The student is asked to compare and determine the smallest volume between 2500 mL, 250 cm3, 2.5 x 10-2 L, and 25 m3. First, let's convert all volumes into a common unit, the milliliter (mL).

2500 mL = 2500 mL (already in mL),
250 cm3 = 250 mL (since 1 cm3 equals 1 mL),
2.5 x 10-2 L = 0.025 L = 25 mL (since 1 L equals 1000 mL),
25 m3 = 25 x 1,000,000 L = 25 x 1,000 x 1,000,000 mL = 25,000,000,000 mL.

From this comparison, we can see that 2.5 x 10-2 L or 25 mL is the smallest volume among the given figures.

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In the Bohr model of the atom, an electron in an orbit has a fixed ____.a. position
c. energy
b. color
d. size

Answers

In the Bohr model of the atom, an electron in an orbit has a fixed energy in which it revolves.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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The answer is C. an electron in an orbit has a fixed energy.

Predict which of the following compounds will be insoluble in water.A. NaCl
B. HCl
C. CF4
D. CuSO4

Answers

$\boxed{{\text{C}}{\text{. C}}{{\text{F}}_4}}$ will be insoluble in water.

Further Explanation:

The bond formed due to electrostatic forces is an ionic bond. The compounds formed by the ions of the respective species are called ionic compounds. One of the species loses electrons and gets converted into cation while the other one accepts electrons and forms anion.

Covalent compound:

The bond that is formed by the mutual sharing of electrons between the bonded atoms is called a covalent bond. It is also known as a molecular bond. Covalent compounds or molecular compounds are those compounds which are formed by the electron sharing between two or more non-metals.

Solubility is the property of any substance that makes it soluble in other substances. It is governed by the principle “like dissolves like”.

A. NaCl is an ionic compound so it dissociates into its constituent ions on dissolving in water. Water is a polar molecule and therefore NaCl is soluble in water.

B. HCl is a polar covalent compound and water is also a polar compound so HCl is soluble in water in accordance with the principle “like dissolves like”.

C. ${\text{C}}{{\text{F}}_{\text{4}}}$ is a non-polar compound while water is a polar compound. So ${\text{C}}{{\text{F}}_{\text{4}}}$ is insoluble in water because of different nature of both substances.

D. ${\text{CuS}}{{\text{O}}_{\text{4}}}$ is an ionic compound so it dissociates into ${\text{C}}{{\text{u}}^(2 + )}$ and ${\text{SO}}_4^(2 - )$ ions on dissolving in water. Water is a polar molecule and therefore ${\text{CuS}}{{\text{O}}_{\text{4}}}$ is soluble in water.

Learn more:

1. Identification of ionic bonding: brainly.com/question/1603987

2. What type of bond exists between phosphorus and chlorine? brainly.com/question/81715

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ionic and covalent compounds

Keywords: ionic compound, covalent compound, solubility, NaCl, HCl, CuSO4, CF4, soluble, insoluble, water, like dissolves like.

Final answer:

Among the compounds NaCl, HCl, CuSO4, and CF4, the latter, CF4, is predicted to be insoluble in water due to its nonpolar nature.

Explanation:

The insolubility of a compound in water depends on its polarity. Nonpolar compounds do not dissolve in water, a polar solvent. The compounds NaCl, HCl, and CuSO4 are all polar ionic compounds and, therefore, soluble in water, since 'like dissolves like'. However, the compound CF4 is a nonpolar molecule and hence predicted to be insoluble in water.

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Which best describes an element? a pure substance a type of a mixture a pure compound an impure substance

Determine the mass of iron in 79.2 g of Fe2O3.

Which change occurs when an atom in an excitedstate returns to the ground state? (1) Energy is emitted. (2) Energy is absorbed. (3) The number of electrons decreases. (4) The number of electrons increases.