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CHEM1020 - Fundamental Chemistry Theory and Practical > Inorganic - Semester 1 > Flashcards

Inorganic - Semester 1 Flashcards

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1
Q

What is the shape and the bond angles in an AB₂ molecule?

A

Linear

180°

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2
Q

What is the shape and the bond angles in an AB₃ molecule?

A

Trigonal Planar

120°

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3
Q

What is the shape and the bond angles in an AB₄ molecule?

A

Tetrahedral

109.5°

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4
Q

What is the shape and the bond angles in an AB₅ molecule?

A

Trigonal bipyramid (trigonal planar with two axial)

90° and 120°.

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5
Q

What is the shape and the bond angles in an AB₆ molecule?

A

Octahedral.

90°.

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6
Q

What is the shape and the bond angles in an AB₂L molecule?

A

V-Shaped (trigonal planar with one vertex replaced with a lone pair).

95° (< 120°)

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7
Q

What is the shape and the bond angles in an AB₃L molecule?

A

Pyramidal (tetrahedral with one vertex replaced with a lone pair).

107°

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8
Q

What is the shape and the bond angles in an AB₂L₂ molecule?

A

V-Shaped (tetrahedral with two vertices replaced with a lone pair).

104.5°

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9
Q

What is the shape and the bond angles in an AB₄L molecule?

A

Seesaw (trigonal planar with one vertex replaced with a lone pair and two axial bonds are present)

<120° and <90°

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10
Q

What is the shape and the bond angles in an AB₃L₂ molecule?

A

T-Shaped (two axial and one equatorial bonds and two equatorial lone pairs).

<90°

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11
Q

What is the shape and the bond angles in an AB₂L₃ molecule?

A

Linear (with three lone pairs occupying equatorial positions).

180°

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12
Q

What is the shape and the bond angles in an AB₅L molecule?

A

Square-based pyramidal (4 equatorial and one axial bond, one axial lone pair).

<90°

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13
Q

What is the shape and the bond angles in an AB₄L₂ molecule?

A

Square planar (4 equatorial bonds, 2 axial lone pairs).

90°

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14
Q

What are dispersion forces also known as?

A

London forces.

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15
Q

What are dipole-dipole forces also known as?

A

Keesom forces.

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16
Q

What are dipole-induced-dipole forces also known as?

A

Debye forces.

17
Q

What is a consequence of a molecule having a centre of inversion?

A

It cannot be polar.

18
Q

What is a consequence of a molecule having an improper rotation axis?

A

It cannot be chiral.

A mirror plane is identical to an S1 axis and a centre of inversion is equivalent to an S2 axis.

CHEM1020 - Fundamental Chemistry Theory and Practical (7 decks)

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