Quiz about Unit 2 Review- Ionization/Atomic Radius/Electronegativity

Question 1

Which is an accurate description of this atomic theory model?

Accepted Answer

Atoms consist of a nucleus and electrons, where protons and neutrons are at the core and electrons circle the nucleus

Answer

Atoms consist of a nucleus and protons, where protons and neutrons are at the core and electrons circle the nucleus

Answer

Atoms consist of a nucleus and electrons, where electrons and neutrons are at the core and electrons circle the nucleus

Answer

There is a proton cloud that surrounds the nucleus and protons move very fast

Question 2

Which of the following pieces of evidence are consistent with the atomic theory shown here?

Accepted Answer

Protons and neutrons exist in the nucleus

Answer

Electrons and neutrons exist in the nucleus

Answer

Electrons and protons exist in the nucleus

Answer

Electrons, protons, and neutrons exist in the nucleus

Question 3

Which of the following is not represented in this model?

Accepted Answer

It doesn't show that electrons are in electron clouds outside the nucleus

Answer

It doesn't show that atoms contains protons, neutrons, and electrons

Answer

It doesn't show that electrons are in orbit around the nucleus

Answer

It doesn't show the charges of protons and electrons.

Question 4

Which atom has the greater atomic radius? Potassium (K) or Cesium (CS)?

Accepted Answer

Cs, because it has more energy levels.

Answer

K, because of its more positive nuclear charge

Answer

K, because it has fewer energy levels

Answer

Cs, because of its more positive nuclear charge

Question 5

Which has the higher first-ionization energy (Cl or Ar)?

Accepted Answer

Ar, because of its more positive nuclear charge.

Answer

Cl, because of its higher electronegativity

Answer

Cl, because of its greater atomic radius

Answer

Ar, because of its completely filled valence shell

Question 6

Which of the following was a limitation of Thompson's plum pudding atomic theory model, shown here?

Accepted Answer

It doesn't show a nucleus

Answer

It does not show that atoms have charges

Answer

The model does not show the existence of electrons

Answer

It doesn't show the existence of subatomic particles

Question 7

Which of the following represented an atom of Oxygen (O)

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 8

Which of the following represented an atom of Sulfur (S)?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 9

Which of the following represented an atom of Nitrogen (N)?

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 10

The data table shows the atomic radius (in picometers, pm) and the first ionization energy (in kilojoules

per mol, kJ/mol) of calcium.

Based on periodic trends, the data in the table above, and its location in the periodic table, which of the

following are the most probable values of the atomic radius and the first ionization energy for potassium (K)?

Accepted Answer

242 pm

419 kJ/mol

Answer

242 pm

633 kJ/mol

Answer

120 pm

633 kJ/mol

Answer

120 pm

419 kJ/mol

Question 11

Which of the following best predicts and explains whether sodium or potassium has a larger atomic radius?

Accepted Answer

Potassium has a larger atomic radius because potassium has more electrons in electron shells that are

further from the nucleus than sodium does.

Answer

Sodium has a larger atomic radius because sodium has more electrons in electron shells that are further

from the nucleus than potassium does.

Answer

Sodium has a larger atomic radius because sodium has greater electrostatic attraction between the

nucleus and the electrons than potassium does.

Answer

Potassium has a larger atomic radius because potassium has greater electrostatic attraction between the

nucleus and the electrons than sodium does.

Question 12

Which of the following are the most probable values for the atomic radii of sodium and potassium, respectively?

(Note: pm is picometer, which is a unit of measurement.)

Accepted Answer

190 pm, 240 pm

Answer

5 pm, 3,452 pm

Answer

3,452 pm, 5 pm

Answer

240 pm, 190 pm

Question 13

Which of the following best predicts and explains whether magnesium or calcium has a greater ionization

energy?

Accepted Answer

Magnesium has a greater ionization energy because the valence electrons of magnesium are closer to the

nucleus experiencing a greater electrostatic force of attraction than calcium does.

Answer

Magnesium has a greater ionization energy because magnesium has fewer electrons in electron shells

than calcium does.

Answer

Calcium has a greater ionization energy because the valence electrons of calcium are further away from

the nucleus experiencing a weaker electrostatic force of attraction than calcium does.

Answer

Calcium has a greater ionization energy because calcium has more electrons in electron shells than

magnesium does.

Question 14

Which of the following are the most probable values for the first ionization energies of magnesium and calcium,

respectively?

Accepted Answer

730 kJ/mol,

490 kJ/mol

Answer

490 kJ/mol,

730 kJ/mol

Answer

490 pm, 730 pm

Answer

730 pm, 490 pm

Question 15

Which of the following correctly compares the identities of Atom A, Atom B, and Atom C, with the correct

reasoning?

Accepted Answer

Atom A and Atom C are different elements because they have different numbers of protons.

Answer

Atom A and Atom C are the same element because they have the same number of energy levels.

Answer

Atom A and Atom B are the same element because they have the same number of valence electrons.

Answer

Atom A and Atom B are different elements because they have different numbers of electrons.

Question 16

One electron is removed from Atom A. Which of the following describes how the overall charge of Atom A will

change?

Accepted Answer

The overall charge will become positive because the number of protons is greater than the number of

electrons.

Answer

The overall charge will remain neutral because if one electron is removed, a proton must also be

removed.

Answer

The overall charge will remain neutral because the number of neutrons remains the same.

Answer

The overall charge will become negative because the number of protons is less than the number of

electrons.

Question 17

Which of the following describes the difference in ionization energies between Atom A and Atom C?

Accepted Answer

The ionization energy of Atom A is less than the ionization energy of Atom C.

Answer

The ionization energy of Atom A is greater than the ionization energy of Atom C.

Answer

The ionization energy of Atom A is equal to the ionization energy of Atom C.

Answer

No conclusion can be made about the ionization energy of Atom A and Atom C.

Question 18

Which of the following predicts which atoms will react with each other and provides accurate reasoning?

Accepted Answer

Atom A will react with Atom C, because Atom C has a higher electronegativity compared to Atom A.

Answer

Atom B will react with Atom C, because Atom B is a non-metal while Atom C is a metal.

Answer

Atom B will react with Atom C, because Atom B has a larger atomic radius compared to Atom C.

Answer

Atom A will react with Atom B, because they both have the same number of valence electrons and have

similar reactivity.

Question 19

A student conducts two reactions in which Atom A and Atom B are each combined with water. Which of the

following correctly predicts how Atom A and Atom B will react with water and provides accurate reasoning?

Accepted Answer

Atom B will react more violently with water because it has a lower electronegativity than Atom A.

Answer

Atom A will react more violently with water because it has more valence electrons than Atom B.

Answer

Atom A will react more violently with water because it has a higher electronegativity than Atom B.

Answer

Atom B will react more violently with water because it has a more positive nuclear charge than Atom A.

Unit 2 Review- Ionization/Atomic Radius/Electronegativity

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