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Gen Chem 1 (kms) > Midterm 3 > Flashcards

Midterm 3 Flashcards

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1
Q

What is the EDG of 2 electron groups?

A

Linear

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2
Q

What is the EDG of 3 electron groups?

A

Trigonal planar

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3
Q

What is the EDG of 4 electron groups?

A

Tetrahedral

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4
Q

What is the EDG of 5 electron groups?

A

Trigonal bipyramidal

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5
Q

What is the EDG of 6 electron groups?

A

Octahedral

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6
Q

What is the molecular geometry of an atom with 3 electron groups and 1 lone pair?

A

Bent (V-shaped)

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7
Q

What is the molecular geometry of an atom with 4 electron groups and 1 lone pair?

A

Trigonal pyramidal

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8
Q

What is the molecular geometry of an atom with 5 electron groups and 1 lone pair?

A

Seesaw (one axial lone pair)

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9
Q

What is the molecular geometry of an atom with 6 electron groups and 1 lone pair?

A

Square pyramidal

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10
Q

What is the molecular geometry of an atom with 4 electron groups and 2 lone pairs?

A

Bent (V-shaped)

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11
Q

What is the molecular geometry of an atom with 5 electron groups and 2 lone pairs?

A

T shaped (two axial lone pairs)

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12
Q

What is the molecular geometry of an atom with 6 electron groups and 2 lone pairs?

A

Square planar

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13
Q

What is the molecular geometry of an atom with 5 electron groups and 3 lone pairs?

A

Linear (3 axial lone pairs)

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14
Q

What is the bond angle of a linear molecular geometry?

A

180

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15
Q

What is the bond angle of a Trigonal planar molecular geometry?

A

120

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16
Q

What is the bond angle of a bent (v-shaped) molecular geometry?

A

Less than 120

17
Q

What is the bond angle of a tetrahedral molecular geometry?

A

109.5

18
Q

What is the bond angle of a trigonal pyramidal molecular geometry?

A

Less than 109.5

19
Q

What is the bond angle of a bent (v-shaped) molecular geometry (steric number 4)?

A

Less than 109.5

20
Q

What are the bond angles of a Trigonal bipyramidal molecular geometry?

A

90 from axial, 120 around center plane

21
Q

What are the bond angles of a see-saw molecular geometry?

A

Less than 120 degrees

22
Q

What are the bond angles of a T-shaped molecular geometry?

A

Less than 90 degrees

23
Q

What are the bond angles of a linear molecular geometry (steric number 5)?

A

180

24
Q

What is the bond angle of an octahedral molecular geometry?

A

90

25
Q

Does an sp2 sp2 overlap develop into a sigma or pi bond?

A

Sigma

26
Q

Does an sp2 1s overlap develop into a sigma or pi bond?

A

Sigma

27
Q

What causes an pi bond?

A

Electrons in unhybridized orbitals (p orbitals) overlapping

28
Q

What is the order of energy of MOs?

A

Sigma < pi < pi star < sigma star

29
Q

Which elements use the inverted MO scheme?

A

Li, Be, B, C, or N

30
Q

Constructive interference generates

A

Bonding orbitals

31
Q

Destructive interference generates

A

Non bonding or anti bonding orbitals

32
Q

The closer in energy AOs are

A

The more they mix to form MOs

33
Q

Higher ___ means more stability

A

Q, ionic charge

34
Q

What is the origin of hypervalency?

A

Atom size

35
Q

What two orbitals are in the sp hybrid?

A

Ns and Npz

36
Q

What orbitals are in the sp2 hybrid

A

Ns, npx, and npy

37
Q

In bonding orbitals, the bigger orbital is on the ___ EN atom

A

More

38
Q

In antibonds, the bigger orbital is on the ___ EN atom

A

Less

Gen Chem 1 (kms) (4 decks)

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