Question 1

Are hydrogen bonds stronger or weaker than covalent bonds?

Accepted Answer

The answer of Are hydrogen bonds stronger or weaker than...

Question 2

A group of covalently bonded atoms that has an overall electrical charge is called a(n)

Accepted Answer

A)  ionic compound.
B)  anion.
C)  polyatomic ion.
D)  cation.
E)  molecule.

Question 3

In a covalently bonded molecule, the number of electrons that an atom shares with others is usually equal to the number of electrons

Accepted Answer

A)  in the atom.
B)  in its nucleus.
C)  in all the atoms.
D)  in its ion.
E)  needed to give it a stable electron configuration.

Question 4

A polar covalent bond is found in which of these compounds?

Accepted Answer

A)  H2O
B)  F2
C)  NaCl
D)  H2
E)  N2

Question 5

An anion always

Accepted Answer

A)  has a positive charge.
B)  contains a group of two or more atoms with a positive charge.
C)  contains a metal and a nonmetal.
D)  forms covalent bonds.
E)  has a negative charge.

Question 6

What is the symbol for the ion with 19 protons and 18 electrons?

Accepted Answer

A)  F+
B)  F-
C)  Ar+
D)  K-
E)  K+

Question 7

Choose the best electron-dot structure for OCl2 .

Accepted Answer

A)   2 . 
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Question 8

The strongest interactions between molecules of iodine I2 are examples of

Accepted Answer

A)  ionic bonds.
B)  covalent bonds.
C)  hydrogen bonds.
D)  dipole-dipole interactions.
E)  dispersion forces.

Question 9

Which one of the following compounds contains an ion with a 3+ charge?

Accepted Answer

A)  KCl
B)  Na2O
C)  FeCl₃
D)  CuCl
E)  MgCl₂

Question 10

How many electrons will lithium gain or lose when it forms an ion?

Accepted Answer

A)  lose 1
B)  gain 5
C)  lose 2
D)  lose 3
E)  gain 1 A

Question 11

Valence electrons are electrons located

Accepted Answer

A)  in the outermost energy level of an atom.
B)  in the nucleus of an atom.
C)  in the innermost energy level of an atom.
D)  throughout the atom.
E)   in the first three shells of an atom.

Question 12

What is the formula for aluminum nitrite?

Accepted Answer

A)  Al2NO2
B)  AlNO₃
C)  Al(NO2) 3
D)  Al2(NO₃) 3
E)  Al2(NO2) ₂

Question 13

The carbon tetrachloride molecule, CCl4 , has the shape of a

Accepted Answer

A)  tetrahedron.
B)  square.
C)  cube.
D)  circle.
E)  sphere.

Question 14

Choose the best electron-dot structure for CH2Cl₂ .

Accepted Answer

A)   2Cl₂ . 
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D)   2Cl₂ . 
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Question 15

A(n)  ________ is the smallest neutral unit of two or more atoms held together by a covalent bond.

Accepted Answer

A)  ionic compound
B)  nucleus
C)  molecule
D)  formula
E)  unit

Question 16

In an electron-dot structure of an element, the dots are used to represent

Accepted Answer

A)  all of the electrons in the atom.
B)  the valence electrons.
C)  the electron arrangement.
D)  only the electrons that will participate in bond formation.
E)  the electrons that the element will gain when it forms a compound.

Question 17

How many valence electrons does nitrogen have?

Accepted Answer

A)  one
B)  two
C)  three
D)  four
E)  five E

Question 18

What is the formula of the nitride ion?

Accepted Answer

A)  N3-
B)  NO2-
C)  NO₃3-
D)  NO₃2-
E)  NO₃-

Question 19

The strongest interactions between molecules of hydrogen chloride are

Accepted Answer

A)  ionic bonds.
B)  covalent bonds.
C)  hydrogen bonds.
D)  dipole-dipole interactions.
E)  dispersion forces.

Question 20

The weakest type of force between particles of a substance is termed ________.

Accepted Answer

The answer of The weakest type of force between particles...

Exam 6: Ionic and Molecular Compounds

Are hydrogen bonds stronger or weaker than covalent bonds?

Correct AnswerverifiedShow Answer

A group of covalently bonded atoms that has an overall electrical charge is called a(n)

Correct AnswerverifiedShow Answer

In a covalently bonded molecule, the number of electrons that an atom shares with others is usually equal to the number of electrons

Correct AnswerverifiedShow Answer

A polar covalent bond is found in which of these compounds?

Correct AnswerverifiedShow Answer

An anion always

Correct AnswerverifiedShow Answer

What is the symbol for the ion with 19 protons and 18 electrons?

Correct AnswerverifiedShow Answer

Choose the best electron-dot structure for OCl2 .

Correct AnswerverifiedE

The strongest interactions between molecules of iodine I2 are examples of

Correct AnswerverifiedShow Answer

Which one of the following compounds contains an ion with a 3+ charge?

Correct AnswerverifiedShow Answer

How many electrons will lithium gain or lose when it forms an ion?

Correct AnswerverifiedA

Valence electrons are electrons located

Correct AnswerverifiedShow Answer

What is the formula for aluminum nitrite?

Correct AnswerverifiedShow Answer

The carbon tetrachloride molecule, CCl4 , has the shape of a

Correct AnswerverifiedShow Answer

Choose the best electron-dot structure for CH2Cl₂ .

Correct AnswerverifiedShow Answer

A(n) ________ is the smallest neutral unit of two or more atoms held together by a covalent bond.

Correct AnswerverifiedShow Answer

In an electron-dot structure of an element, the dots are used to represent

Correct AnswerverifiedShow Answer

How many valence electrons does nitrogen have?

Correct AnswerverifiedE

What is the formula of the nitride ion?

Correct AnswerverifiedShow Answer

The strongest interactions between molecules of hydrogen chloride are

Correct AnswerverifiedShow Answer

The weakest type of force between particles of a substance is termed ________.

Correct AnswerverifiedShow Answer

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Choose the best electron-dot structure for OCl₂ .

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E

The strongest interactions between molecules of iodine I₂ are examples of

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A

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The carbon tetrachloride molecule, CCl₄ , has the shape of a

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Choose the best electron-dot structure for CH₂Cl₂ .

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E

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