Chapter 9 Key Terms Flashcards

1
Q

Bond Energy

A

Energy to break 1 mol of gas state bond

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2
Q

Bond length

A

Average length of a bond

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3
Q

Bonding pair

A

Pair of electrons shared between two atoms

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4
Q

Born Haber Cycle

A

Hypothetical series of steps that represents formation of ionic compound

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5
Q

Chemical bond

A

Sharing or transfer of electrons to allow stable electron configurations

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6
Q

Covalent bond

A

Chemical bond involving sharing electrons

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7
Q

Dipole moment

A

Separation of positive and negative charge in a molecule

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8
Q

Double bond

A

Bond that forms when 4 electrons are shared between two atoms

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9
Q

Duet

A

A lewis structure with two dots

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10
Q

Formal charge

A

Charge that a lewis structure atom would have if all electrons were shared evenly

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11
Q

Electronegativity

A

Ability of an atom to attract electrons in a covalent bond

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12
Q

Free radical

A

A molecule or ion with an odd number of valence electrons

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13
Q

Ionic bond

A

Chemical bond involving switching of electrons

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14
Q

Lattice energy

A

Energy associated with forming crystal from ions

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15
Q

Lewis Dot Structure

A

Drawing representing chemical bonds between atoms as shared or transferred electrons

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16
Q

Lone pair

A

Electron pair not being shared

17
Q

Metallic bonding

A

Bonds between two metals

18
Q

Octet Rule

A

Most bonded atoms want 8 valence electrons

19
Q

Octet

A

Lewis dot containing 8 electrons

20
Q

Percent Ion Character

A

Ratio of actual dipole moment to theoretical ionic dipole moment

21
Q

Polar covalent bond

A

Covalent bond between two atoms with different electronegativity

22
Q

Resonance Hybrid

A

Actual structure of a molecule that is intermediate between two + resonances

23
Q

Resonance structures

A

Two+ valid lewis structures that blend to cause actual shape

24
Q

Triple bond

A

Bond formed when three electron pairs are shared