Quiz about Atomic Structure and Bonding Review

Question 1

Iodine, I (atomic number 53), is an essential element for human life. The model illustrates an iodine-127 atom, with 53 protons, 74 neutrons, and 53 electrons.

Which of the following would be the outcome of this essential element if one proton is added to this iodine nucleus?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 2

Magnesium reacts with another element to form a compound.

Which element MOST LIKELY combined with the magnesium?

Accepted Answer

Sulfur

Answer

Sodium

Answer

Argon

Answer

Calcium

Question 3

Which of the following compounds are covalent?

Accepted Answer

Carbon tetrachloride (CCl₄)

Answer

Sodium hydride (NaH)

Answer

Magnesium chloride (MgCl₂)

Answer

Magnesium chloride (NaOH)

Question 4

A. Phosphorus trifluoride

B. Boron trichloride

C. Chlorine pentafluoride

Which includes the correct formulas for these compounds?

Accepted Answer

A. PF₃

B. BCl₃

C. ClF₅

Answer

A. F₃P

B. Cl₃B

C. F₅Cl

Answer

A. PCl₃

B. BrCl₃

C. CF₅

Answer

A. PhFl₃

B. BoCh₃

C. ChFl₅

Question 5

Which of the following formula and chemical name combinations is correctly shown?

Accepted Answer

N₂O₅; dinitrogen pentoxide

Answer

N₂O₂; nitrogen dioxide

Answer

Ca₂P₃; dicalcium diphosphide

Answer

PCl₅; phosphorus tetrachloride

Question 6

a. IF₇

b. PO₅

c. NO₅

Which shows the correct names for these compounds?

Accepted Answer

a. iodine heptafluoride

b. diphosphorus pentaoxide

c. dinitrogen pentaoxide

Answer

a. iodide heptafluorine

b. diphosphorus pentaoxide

c. dinitride pentaoxygen

Answer

a. iodine heptafluoride

b. pentaphosphorus dioxide

c. pentanitrogen dioxide

Answer

a. heptaiodide fluorine

b. diphosphorus pentaoxide

c. pentanitride dioxygen

Question 7

Which choice represents a correctly written formula for sulfur hexafluoride?

Accepted Answer

SF6

Answer

SF

Answer

SF2

Answer

S6F

Question 8

Which of the following represents a correctly written binary ionic compound for the atoms shown?

Accepted Answer

Mg3P2

Answer

Mg2P3

Answer

P2Mg3

Answer

P3Mg2

Question 9

Which compound shows a correctly written formula between the atoms shown?

Accepted Answer

AlCl3

Answer

AlAr

Answer

AlAr3

Answer

AlCl

Question 10

Which element behaves the MOST like calcium and why?

Accepted Answer

Ba, because it is in the same group and has same number of

valence electrons.

Answer

K, because it is in the same period and only has one less valence electron.

Answer

Br, because it is in the same period and has more valance

electrons.

Answer

Sc, because it is in the same period and has one more valence

electron.

Question 11

Two ions are shown in the model and form a compound.

What compound would be formed between the two ions modeled?

Accepted Answer

BF3

Answer

BFl3

Answer

BaF3

Answer

BaFl3

Question 12

Paul wants to model the formula for aluminum oxide, the main component in rubies, using

the spheres to represent aluminum (Al) and oxygen (O) atoms.

Which model correctly shows the stable ionic compound that forms rubies?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 13

Consider the model of an atom shown.

Which of the following atoms could form a stable ionic compound with the model shown?

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 14

Based on the properties of elements 1, 2, and 3, in which section of the periodic table would you find them?

Accepted Answer

Element 1 Section A

Element 2 Section B

Element 3 Section C

Answer

Element 1 Section C

Element 2 Section B

Element 3 Section A

Answer

Element 1 Section B

Element 2 Section A

Element 3 Section C

Answer

Element 1 Section B

Element 2 Section C

Element 3 Section A

Question 15

Sandy was studying a model of a group of atoms.

Which of the following statements is TRUE for the atoms shown?

Accepted Answer

The mass number of the atoms is different because the number of neutrons is different.

Answer

The mass number of the atoms is the same because the number of protons is the same.

Answer

The atomic number of the atoms is different because the number of neutrons is different.

Answer

The atomic number of the atoms is same because the number of electrons is the same.

Question 16

Which of the following statements accurately represents the three atoms shown in the image given?

Accepted Answer

The three atoms pictured represent a neutral atom, an isotope,

and an ion of the same element.

Answer

The three atoms pictured represent different elements.

Answer

The three atoms pictured represent ions of the same element.

Answer

The three atoms pictured represent isotopes of the same element.

Question 17

Which of the following is appropriate for determining the the IUPAC nomenclature for N₂O?

Accepted Answer

The prefixes should be used for both nitrogen and oxygen.

Answer

Locate the position of the metal ion in N₂0.

Answer

Use Roman numeral II for the nitrogen since it has 2 atoms.

Answer

A prefix is only needed for nitrogen because each molecule

contains 2 nitrogen atoms.

Question 18

The following atoms can form a stable ionic compound when the proper number of positive and negative ions combine.

Which of the following compounds could be formed by the positive ion depicted if it

combines with another element?

Accepted Answer

KCl

Answer

MgS

Answer

KS2

Answer

MgO

Question 19

Which two elements will have similar physical and chemical properties?

Accepted Answer

Ca and Mg

Answer

Br and Se

Answer

Ge and Se

Answer

K and Mg

Question 20

Which of the following lists of elements is ordered by increasing number of valence electrons?

Accepted Answer

Li, C, O, F

Answer

F, O, N, C

Answer

O, S, Se, Te

Answer

Sr, Ca, Mg, Be

Question 21

Which compound will likely form when an element in group 1 reacts with an element in group 17?

Accepted Answer

hydrochloric acid, HCl

Answer

sulfuric acid, H₂SO₄

Answer

calcium fluoride, CaF₂

Answer

hydrogen sulfide, H₂S

Question 22

What is the correct chemical formula for dinitrogen tetraoxide?

Accepted Answer

N2O4

Answer

N3O2

Answer

N2O3

Answer

N4O2

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