Reference no: EM133289860

Gen Organic and Biochemistry

Question 1
A magnesium ion, Mg²⁺, has

• 12 protons and 14 electrons.
• 24 protons and 26 electrons.
• 24 protons and 22 electrons
• 12 protons and 10 electrons.
• 12 protons and 13 electrons.

Question 2

The correct name for NH₄NO₂ is

A) hydrogen nitrogen oxide.

B) hydrogen nitrate

C) ammonium nitrite

D) ammonium nitrate

E) ammonia nitrogen dioxide

Question 3 What is the formula for the ionic compound formed by magnesium and iodine?

• MgI₂
• Mg₂I
• Mg₃I
• MgI
• MgI₃

Question 4 Which one of the following elements is most likely to form a 2- ion?

A) strontium

B) iodine

C) selenium

D) scandium

E) silicon

Question 5 The correct name for KHCO₃ is

A) calcium hydrogen carbon trioxide

B) potassium carbonate

C) calcium bicarbonate

D) potassium hydrogen carbonate

E) calcium carbonate

Question 6 What is a cation?

• A cation is defined as an atom that has gained electrons and forms a positive charge.
• A cation is defined as an atom that has lost electrons and forms a positive charge
• A cation is defined as an atom that has gained electrons and forms a negative charge
• A cation is defined as an atom that has lost electrons and forms a negative charge.

Question 7 What is the formula for the binary compound formed by potassium and nitrogen?

A) NK₂

B) KN

C) K₂N

D) NK₃

E) K₃N

Question 8 Which of the following pairs of elements would be most likely to form an ionic compound?

A) C and S

B) Al and K

C) Al and Mg

D) Cl and I

E) Cl and Mg

Question 9 The Lewis dot symbol for the S^2- ion is

 

Question 10 Which of the following is the formula for hydrobromic acid?

A) HBr

B) HBrO₃

C) KBr

D) HBrO₂

E) HBrO

Question 11 An aluminum ion, Al³⁺, has:

A) 13 protons and 13 electrons

B) 16 protons and 13 electrons

C) 10 protons and 13 electrons

D) 27 protons and 24 electrons

E) 13 protons and 10 electrons

Question 12 The chemical formula for iron(II) nitrate is:

Fe₂(NO₃)₃

Fe(NO₂)₂

Fe(NO₃)₂

Fe₂N₃

F(NO₂)₂

Question 13 Which of the following Lewis structures is incorrect?

 

Question 14 The Lewis dot symbol for the a lead atom is

 

Question 15 The chemical name for ClO₃^- is chlorate ion. Therefore, the name of HClO₃ is

A) chlorous acid.

B) hydrochloric acid.

C) chloroform.

D) chloric acid.

E) hydrogen trioxychloride.

Question 16

How many protons and electrons are present in one bromide ion?

80 p, 81 e
35 p, 34 e
80 p, 34 e
35 p, 36 e
35 p, 35 e

Question 17 Given that the ion ClO^3- is named chlorate, what is the ion ClO^4- named?

A) hypochlorite

B) perchlorite

C) chloride

D) perchlorate

E) chlorite

Question 18 Which pair of elements would be most likely to form an ionic compound?

Al and Rb C and S P and Br F and Al
Zn and K

Question 19 Predict the formula for the binary compound formed between barium and phosphorus.

A) Ba3P2

B) Ba2P3

C) Ba2P

D) BaP

E) BaP2

Question 20
Name the binary compound formed between barium and phosphorus.

A) barium diphosphate

B) barium phosphorus

C) barium triphosphide

D) barium(II) phosphate

E) barium phosphide

Question 21
The formula for sodium sulfide is

A) NaS₂

B) SeS

C) Na₂S

D) K₂S

E) NaS

Question 22
What is the formula for the ionic compound formed by calcium and selenium?

A) Ca₂Se

B) Ca₃Se

C) CaSe₂

D) CaSe

E) CaSe₃

Question 23
A gallium ion, Ga³⁺, has:

A) 16 protons and 31 electrons

B) 31 protons and 28 electrons

C) 27 protons and 24 electrons

D) 31 protons and 31 electrons

E) 70 protons and 31 electrons

Question 24 An anion is defined as

A) an atom or group of atoms with a net positive charge.

B) a stable atom.

C) a group of stable atoms.

D) a charged atom or group of atoms with a net negative charge.

Question 25
The electron dot structure for AsCl₃ shows

A) one single bond, two double bonds, and 8 lone pairs.

B) a total of 84 electron dots.

C) three single bonds and one lone pair.

D) two single bonds, one double bond, and 9 lone pairs.

E) three single bonds and 10 lone pairs.

Question 26
The number of lone electron pairs in the N2 molecule is ___.

A) 4

B) 5

C) 3

D) 2

E) 1

Question 27 An oxide ion, O^2-, has:

A) 8 protons and 10 electrons

B) 10 protons and 7 electrons

C) 8 protons and 9 electrons

D) 8 protons and 7 electrons

E) 10 protons and 8 electrons

Question 28
Which is the correct formula for lead(IV) chloride?

PbCl₃

Pb₄Cl

PbCl₄

PbCl₂

Pb₂Cl₄

Question 29
Which is the correct formula for copper(II) phosphate?

A) Cu₂PO₄

B) Cu₃(PO₄)²

C) Cu(PO₄)²

D) Cu(PO3)²

E) Cu₂PO₃

Question 30
The formula for calcium phosphite is

A) Ca3P₂

B) Ca₃(PO₃)₂

C) Ca₂(PO₄)₃

D) CaPO₄

E) Ca₃(PO₄)₂

Question 31

The formula for potassium sulfide is

A) KS₂

B) K₂S

C) PS

D) P₂S

E) NaS

Question 32 What is the formula for the ionic compound formed by calcium ions and nitrite ions?

A) Ca₃N₂

B) Ca(NO3)₂

C) Ca₂NO₂

D) Ca(NO₂)₂

E) Ca₂NO₃

Question 33
Which of the following elements is chemically similar to magnesium?

A) calcium

B) nickel

C) iron

D) potassium

E) sulfur

Question 34 The Lewis dot symbol for the calcium ion is

 

Question 35
A nitride ion has:

• 7 protons and 10 electrons
• 10 protons and 7 electrons
• 10 protons and 13 electrons
• 7 protons and 7 electrons
• 12 protons and 15 electrons

Question 36 The correct name for NH₄NO₃ is

A) hydrogen nitrogen oxide.

B) ammonium nitrate

C) ammonium nitrogen trioxide

D) ammonia nitrogen oxide

E) hydrogen nitrate

Question 37
The Stock system name for CrO₃ is:

A) chromium(VI) oxide

B) chromium(II) oxide

C) chromium(III) oxide

D) chromium(III) trioxide

E) chromium oxide

Question 38 Which of the following elements is chemically similar to oxygen?

A) nickel

B) iron

C) sulfur

D) calcium

E) sodium

Question 39 Consistent with vanadium being a transition metal, the name for VSO4 should be

vanadium (II) sulfate

vanadium (IV) sulfite.
vanadium sulfur tetraoxide. vanadium (IV) sulfate.
vanadium sulfide.

Question 40
The total number of bonding electrons in a molecule of formaldehyde (H2CO) is

A) 6

B) 3

C) 18

D) 4

E) 8

Question 41 The formula for calcium phosphate is

A) Ca₂(PO₄)³

B) Ca₃(PO₄₎²

C) Ca₃P₂

D) CaPO₄

E) Ca₃(PO₃)²

Question 42 The Stock system name for Mn₂O₇ is

A) dimanganese heptaoxide

B) magnesium oxide

C) manganese(III) oxide

D) manganese(II) oxide

E) manganese(VII) oxide

Question 43 What is the formula for the ionic compound formed by calcium ions and nitrate ions?

A) Ca₂NO₃

B) Ca₂NO₂

C) Ca₃N₂

D) CaNO₃

E) Ca(NO₃)₂

Question 44

The chemical formula for iron(II) nitrate is

A) Fe₂(NO₃)₃

B) Fe₂N₃

C) Fe(NO₂)₂

D) Fe(NO₃)₂

E) Ir(NO₂)₂

Question 45
The Stock system name for Co₂(SO₃)₃ is:

A) cobalt(III) sulfate

B) cobalt sulfate

C) cobalt(II) sulfate

D) cobalt(II) sulfite

E) cobalt(III) sulfite

Question 46 Which one of the following is an ion?

none of the above He
NaCl B3+
14C

Question 47 An iron(II) ion has:

A) 26 electrons and a charge of 2+

B) 24 electrons and a charge of 2+

C) 28 electrons and a charge of 2+

D) 24 electrons and a charge of 2-

E) 28 electrons and a charge of 2-

Question 48 An iron(III) ion has:

A) 23 electrons and a charge of 3+

B) 26 electrons and a charge of 3+

C) 28 electrons and a charge of 3-

D) 28 electrons and a charge of 3+

E) 24 electrons and a charge of 2-

Question 49
The Lewis structure for CS2 is:

 

Question 50

A sulfide ion, S^2-, has:

A) 16 protons and 18 electrons

B) 18 protons and 19 electrons

C) 16 protons and 8 electrons

D) 8 protons and 7 electrons

E) 10 protons and 7 electrons

Question 51
Which is the correct formula for copper(II) phosphite?

A) Cu₃(PO₄)₂

B) Cu₂PO₃

C) Cu(PO₃)₂

D) Cu₂PO₄

E) Cu₃(PO₃)₂

Question 52 Which of the following pairs of elements would be most likely to form an ionic compound?

A) Cu and K

B) Al and Rb

C) O and Zn

D) C and O

E) P and Br

Question 53

What is the correct formula for acetic acid?

CH₃COOH

CH₃CO₂H₂

CH₃CO₂^-

CH₃COOH₂

Question 54

What is the correct formula for iodine monochloride?

• ICl₂
• Cl-I₂
• ICl
• I₂Cl

Question 55
The correct name for Ba(OH)₂ is

A) boron hydroxide

B) beryllium hydroxide

C) barium hydrate

D) barium hydroxide

E) barium hydrogen oxide

Question 56 Which one of the following is most likely to be a covalent compound?

A) Al₂O₃

B) CaCl₂

C) CaSO₄

D) KF

E) SF₄

Question 57 What is the formula for the ionic compound formed by calcium and sulfur?

A) CaS₂

B) Ca₂S

C) CaS

D) CaS₃

E) Ca₃S

Question 58 Which one of the following elements is most likely to form a 2+ ion?

A) sodium

B) carbon

C) beryllium

D) fluorine

E) oxygen

Question 59 The formula for magnesium sulfate is

MgS.

MgSO₄.

MnSO₄.
MnS.

MnSO₃.

Question 60
The electron dot formula for O₂ shows

A) a double covalent bond.

B) a total of 32 electron dots.

C) an ionic bond.

D) a single covalent bond.

E) a total of 8 x 2 = 16 electron dots.