Week 5: Chemical Bonding and Nomenclature

Question 1

What is the most likely formula of the neutral, ionic compound formed by magnesium and oxygen?

Accepted Answer

MgO

Question 2

What is the most likely formula of the neutral, ionic compound formed by lithium and nitrogen?

Accepted Answer

Li3N

Question 3

Which of the following covalent bonds would you expect to be the most polar?

Accepted Answer

C-F

Question 4

Phosphine, PH3, has ________ covalent pairs and ________ lone pairs.

Accepted Answer

3; 1

Question 5

The expected formula between silicon and fluorine is ________.

Accepted Answer

SiF4

Question 6

What is the chemical name of the compound whose formula is K2O?

Accepted Answer

potassium oxide

Question 7

What is the chemical formula of the compound named potassium bicarbonate?

Accepted Answer

KHCO3

Question 8

How many valence electrons does a single, neutral iodine atom have?

Accepted Answer

7

Question 9

Energy is released as two atoms, such as two hydrogen atoms, form, a bond.

Accepted Answer

True

Question 10

Silicon dioxide is the expected formula of the compound that forms between silicon and oxygen.

Accepted Answer

True

Question 11

The number of valence electrons in neon is ________.

Accepted Answer

8

Question 12

How many valence electrons are needed to construct the Lewis dot structure of the BCl3 molecule?

Accepted Answer

24

Question 13

Water, H2O and hydrogen peroxide, H2O2, have identical properties.

Accepted Answer

False

Question 14

To follow the octet rule, how many electrons must a neutral sulfur atom gain when forming a negative ion?

Accepted Answer

2

Question 15

Which of the following compounds has a covalent bond?

Accepted Answer

H2

Question 16

How many resonance structure could be drawn for the nitrate ion?

Accepted Answer

3

Question 17

Which is the only ion that has a -3 charge?

Accepted Answer

phosphate

Question 18

The numerical rating of an atom's ability to attract the shared electrons is called ________.

Accepted Answer

electronegativity

Question 19

The compound H2CO3 is called ________.

Accepted Answer

carbonic acid

Question 20

Which of the following -ic ending cations have the most positive charge?

Accepted Answer

stannic

Question 21

Which of the following phrases best describes the H-O bonds present in water (H2O)?

Accepted Answer

polar and covalent

Question 22

Fluorine is the most electronegative element in the periodic table.

Accepted Answer

True

Question 23

Which of the following has a triple bond?

Accepted Answer

nitrogen, N2

Question 24

Which of the following elements has the lowest number of valence electrons?

Accepted Answer

lithium

Question 25

Which of the following does not have a charge of -2?

Accepted Answer

nitrate

Question 26

Which phrase best describes a covalent bond between two atoms?

Accepted Answer

an arrangement of atoms that share two electrons between adjacent atoms

Question 27

Which of the following sets is comprised exclusively of covalent binary compounds?

Accepted Answer

H2O, SiO2, NO

Question 28

Water, H2O, has ________ covalent bonds and ________ lone pairs.

Accepted Answer

2; 2

Question 29

Methane, CH4, has ________ covalent bonds and ________ lone pairs

Accepted Answer

4; 0

Question 30

Which of the following anions has its number of oxygen atoms equal to a number other than 4?

Accepted Answer

nitrate

Question 31

Which of the following -ous ending have the least positive charge?

Accepted Answer

mercurous

Question 32

What is the chemical name given to the compound whose formula is N2O4?

Accepted Answer

dinitrogen tetraoxide

Question 33

How many covalent bonds can a single oxygen atom form with other elements?

Accepted Answer

2

Question 34

Which of the following AQUEOUS acids does not have the -ic ending?

Accepted Answer

H2SO3 (aq)

Question 35

The ion P-3 is named phosphate.

Accepted Answer

False

Question 36

Which of the following statements best describes an ionic bond?

Accepted Answer

a strong lattice of (+) and (-) charged atoms held by electrical forces

Question 37

Compounds formed from carbon and hydrogen should be ionic in character.

Accepted Answer

False

Question 38

Which of the following covalent bonds would you expect to be the least polar?

Accepted Answer

C-C

Question 39

Which of the following is a binary compound?

Accepted Answer

sodium chloride

Question 40

What is the chemical formula of calcium phosphate?

Accepted Answer

Ca3(PO4)2

Question 41

Which of the following bonds would you expect to be ionic?

Accepted Answer

Na-F

Week 5: Chemical Bonding and Nomenclature

Questions 41

Week 5: Chemical Bonding and Nomenclature

Questions 41