Deck 3: Ionic Compounds

Question 1

Which element has a variable charge?

A)Na
B)Fe
C)Al
D)C

Answer 1

Fe

Question 2

Consider the A atom and the A2- ion. Which will have the larger radius (size)?

A)The A^2- ion
B)The A atom
C)They will both have identical radii
D)Impossible to determine

Answer 2

The A^2- ion

Question 3

________ are negatively charged ions that have ________ electrons than protons.

A)Anions; more
B)Cations; more
C)Anions; less
D)Cations; less

Answer 3

Anions; more

Question 4

What is the ion symbol for an atom with sixteen (16)protons and eighteen (18)electrons?

A)S^2-
B)S
C)Ar
D)Ar²⁺
E)Ar^2-

Question 5

What is the ion symbol of the oxide ion?

A)O^2-
B)O₂^2-
C)O₂
D)O²⁺
E)O^6-

Question 6

Consider the B atom and the B+ ion. Which will have the larger radius (size)?

A)The B⁺ ion
B)The B atom
C)They will both have identical radii
D)Impossible to determine

Question 7

Which statement best explains the basis for the octet rule?

A)Atoms are most stable when they have eight bonds.
B)Atoms lose,gain,or share electrons to become a stable,noble gas.
C)Atoms are most stable with eight protons in their nucleus.
D)Atoms are most stable with eight electrons in their valence shell and the electron configuration of a noble gas.

Question 8

When forming ions,metals typically do which of the following?

A)Lose electrons to form negatively charged ions
B)Gain protons to form cations
C)Gain electrons to form anions
D)Lose electrons to form positively charged ions

Question 9

What is the formula for the ionic compound lithium oxide?

A)LiO
B)LiO₂
C)Li₂O
D)Li₂O₂

Question 10

Which pair of elements will form an ionic compound?

A)Sulfur and oxygen
B)Copper and iron
C)Iron and chlorine
D)Bromine and oxygen

Question 11

What is the symbol for the ion formed by magnesium?

A)Mg^2-
B)Mg³⁺
C)Mg²⁺
D)Mg^4-

Question 12

What is the ion symbol for an atom with twenty (20)protons and eighteen (18)electrons?

A)Ca
B)Ca²⁺
C)Ar
D)Ar²⁺
E)Ar^2-

Question 13

How many protons and electrons are present in Co²⁺?

A)27 protons,27 electrons
B)27 protons,29 electrons
C)27 protons,25 electrons
D)29 protons,27 electrons

Question 14

Which statement concerning the ion Li⁺ is correct?

A)Li⁺ has two total electrons.
B)Li⁺ has an octet of electrons in its valence shell.
C)Li⁺ is formed when a lithium atom gains one electron.
D)Li⁺ is formed when a lithium atom gains one proton.

Question 15

What is the formula for the ionic compound formed when potassium and bromine combine?

A)PBr
B)KBr
C)KBr₂
D)K₂Br
E)K₇Br

Question 16

Which is NOT a covalent compound?

A)Br₂
B)NO₂
C)NH₃
D)NaNO₂
E)More than one of the compounds is not a covalent compound.

Question 17

What is the electron configuration of an F^- ion?

A)1s²2s²2p⁴
B)1s²2s²2p⁵
C)1s²2s²2p⁶
D)1s²2s²2p⁶3s¹

Question 18

Which is NOT an ionic compound?

A)KCl
B)Ca(NO₃)₂
C)CBr₄
D)AlBr₃

Question 19

In bonding,main group elements ________ to attain the electronic configuration of the noble gas closest to them in the periodic table.

A)gain electrons
B)lose electrons
C)share electrons
D)gain,lose,or share electrons

Question 20

What is the charge of the ions formed by group 7A elements?

A)+1
B)+7
C)-1
D)-7

Question 21

What is the charge on the iron ion in the compound Fe₂O₃?

A)+1
B)+2
C)+3
D)+4

Question 22

What is the correct formula for the ionic compound formed from the cation X³⁺ and the anion Y^2- that results in zero overall charge?

A)X₂Y₃
B)X₂Y
C)X₃Y₂
D)XY₃

Question 23

Which chemical formula is correct?

A)Ag(CH₃CO₂)₂
B)K₂CN
C)Mg(OH)₂
D)MgHCO₃
E)More than one of the formulas is correct.

Question 24

What is the chemical formula for the ionic compound calcium selenide?

A)Ca₂Se₂
B)CaSe
C)CaSe₂
D)Ca₂Se

Question 25

Which group of the Periodic Table does not typically form ions?

A)Group 1A
B)Group 2A
C)Group 6A
D)Group 7A
E)Group 8A

Question 26

Which atom fits the electron-dot symbol shown below?

A)Li
B)B
C)N
D)Na

Question 27

What is the chemical formula of tin (IV)cyanide?

A)Sn₄CN
B)SnCN₄
C)Sn(CN)₄
D)SnC₄N₄

Question 28

What is the correct formula for the ionic compound formed from the cation X²⁺ and the anion Y^- that results in zero overall charge?

A)X₂Y
B)XY
C)XY₂
D)X₂Y₂

Question 29

Which chemical formula is NOT correct?

A)Na₂HCO₃
B)NaNO₃
C)Na₂HPO₄
D)Na₂SO₃
E)More than one of the formulas is not correct.

Question 30

Which roman numeral correctly completes the name of the compound CrO?

A)Chromium (I)oxide
B)Chromium (II)oxide
C)Chromium (III)oxide
D)Chromium (IV)oxide

Question 31

The formula for zinc acetate is ________.

A)ZnCH₃CO₂
B)Zn(CH₃CO₂)₂
C)Zn(HCO₃)₂
D)Zn(HCl)₈

Question 32

What is the proper name for MgF₂?

A)Magnesium fluoride
B)Magnesium (I)fluoride
C)Magnesium (II)fluoride
D)Magnesium difluoride

Question 33

An atom has the electron-dot symbol shown below. If this atom is a main group element,what charge will it form in its ionic state?

A)-1
B)+3
C)-5
D)-3

Question 34

What is the formula for the ionic compound formed when magnesium and oxygen combine?

A)MgO
B)MgO₂
C)Mg₂O
D)Mg₂O₂

Question 35

If atoms with the electron-dot symbols shown below are combined,what is the formula of the ionic compound that is formed?

A)XY
B)X₂Y
C)XY₂
D)X₂Y₂
E)X₃Y₂

Question 36

What is the proper name for CuCl?

A)Copper chloride
B)Copper (I)chloride
C)Copper (II)chloride
D)Copper monochloride

Question 37

If atoms with the electron-dot symbols shown below are combined,what is the formula of the ionic compound that is formed?

A)XY
B)X₂Y
C)XY₂
D)X₂Y₂
E)X₃Y₂

Question 38

What is the charge on the nickel ion in the compound NiCl₂?

A)+1
B)+2
C)+3
D)+4

Question 39

What is the name of the SO₄^2- ion?

A)Sulfide ion
B)Sulfate ion
C)Sulfite ion
D)Bisulfate ion

Question 40

What is the formula for the ionic compound formed when aluminum and sulfur combine?

A)AlS
B)Al₂S₃
C)AlS₃
D)Al₂S
E)Al₃S₂

Question 41

A cation is positively charged,and has more electrons than the neutral atom.

Question 42

Ionic bonds result from the sharing of electrons between two atoms.

Question 43

Bonding is the joining of two atoms in a stable arrangement.

Question 44

What is the formula for chromous cyanide?

A)CrCN
B)Cr(CN)₂
C)Cr(CN)₃
D)Cr₂CN

Question 45

The diphosphate ion is a biologically important polyatomic ion. If the ionic compound calcium diphosphate has the formula Ca₂P₂O₇,which correctly represents the ion symbol of the diphosphate ion?

A)P₂O₇^2-
B)PO^4-
C)2 PO₄^6-
D)P₂O₇^4-

Question 46

Neutral atoms always contain an equal number of protons,neutrons,and electrons.

Question 47

The (II)in the name of the ionic compound lead (II)acetate specifically indicates that there are two lead ions present in the compound.

Question 48

Ionic compounds are composed of positively and negatively charged ions held together by strong electrostatic forces.

Question 49

What is the charge on the chromium ion in the ionic compound CrCl₃?

A)+6
B)+3
C)-3
D)-6
E)Not enough information is given to determine the charge.

Question 50

The ionic formula for zinc oxide is ZnO₂.

Question 51

The correct name for Ag₂O is ________.

A)silver (II)oxide
B)silver (I)oxide
C)silver oxide
D)disilver oxide

Question 52

When an atom gains or loses electrons,the ion formed will have the same radius (size).

Question 53

Anions are formed when a neutral atom gains one or more electrons.

Question 54

What period 4 element forms an ion with a -1 charge?

A)Sulfur
B)Bromine
C)Iodine
D)Rubidium
E)Potassium

Question 55

What is the formula for the ionic compound formed from the lead (II)ion and the carbonate ion?

A)Pb(CO₃)₂
B)PbCO₃
C)Pb₂CO₃
D)PbCO₄

Question 56

The correct name for AuI₃ is ________.

A)silver iodide
B)gold iodide
C)gold (III)iodide
D)gold iodide (III)

Question 57

Ionic compounds are composed of individual molecules,discrete groups of atoms that share electrons.

Question 58

Cations are smaller in size than the atoms from which they are formed.

Question 59

Which compound has the highest melting point?

A)KCl
B)CH₄
C)C₆H₁₂O₆
D)H₂O

Question 60

What is the name of the compound (NH₄)₂SO₄?

A)Ammonium sulfide
B)Ammonia sulfate
C)Ammonia sulfoxide
D)Ammonium sulfate
E)Diammonium sulfate

Question 61

Sodium bicarbonate and sodium hydrogen carbonate are two acceptable names for the same compound.

Question 62

Ionic compounds are usually solids at room temperature.

Question 63

The electron configuration for the sulfide ion is 1s²2s²2p⁶3s²3p⁶4s².

Question 64

The noble gas that has the same electronic configuration as the iodide ion is krypton.

Question 65

If the main group element has an electron-dot symbol of ,the charge of the resulting ion will be -2.

Question 66

All ionic compounds are soluble in water.

Question 67

An ionic compound is a pure substance formed by chemically combining two or more nonmetal atoms together.

Question 68

The carbonate ion contains the same number of oxygen atoms as the sulfate ion.

Question 69

If the main group element has an electron-dot symbol of ,the charge of the resulting ion will be +2.

Question 70

Elements in group 2A form ions with a +2 charge.

Question 71

Ionic compounds have very high melting points compared to covalent compounds.

Question 72

The formula for copper (II)hydroxide is Cu(OH)₂.

Question 73

All polyatomic ions are anions.

Question 74

The name of an anion usually ends in the -ide if it is derived from a single atom or -ate (or -ite)if it is polyatomic.

Question 75

The sulfite ion contains more oxygen atoms than the sulfate ion.

Question 76

The correct name for CaHPO₄ is calcium phosphate.

Question 77

A polyatomic ion is an ion that forms more than one charge.

Question 78

All isotopes of an element form the same type of ion.

Question 79

The symbol for the nitrite ion is NO₂^-.

Question 80

Sodium nitrate and sodium nitrite are two acceptable names for the same compound.