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Chemistry (W) > Shapes Of Simple Molecules And Ions > Flashcards

Shapes Of Simple Molecules And Ions Flashcards

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1
Q

What is the shape of a molecule/ion determined by?

A

The number of electron pairs in the outer cell

The presence of lone pairs

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2
Q

What is electron repulsion theory?

A

Electron pair repel each other and try to get as far apart as possible

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3
Q

Why do species containing only bonding pairs of electrons have a regular molecular shape?

A

The binding pairs of electrons exert equal repulsion to each other

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4
Q

What is the order of repulsion between: a lone bonding pair, a bonding pair, and a lone pair in terms of decreasing repulsion?

A

Lone pair
Lone bonding pair
Bonding pair

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5
Q

What shape would 2 electron pairs , 2 bonding pairs and no lone pairs have?

A

Linear (180 degrees)

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6
Q

What shape would 3 electron pairs, 3 bonding pairs and no lone pairs have?

A

Trigonal Planar (120 degrees)

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7
Q

What shape would 3 electron pairs, 2 bonding pairs and 1 lone pair have?

A

Bent V-shaped (>120 degrees)

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8
Q

What shape would 4 electron pairs, 4 bonding pairs and non lone pairs have?

A

Tetrahedral (109.5 degrees)

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9
Q

What shape would 4 electron pairs, 3 bonding pairs and 1 lone pair have?

A

Trigonal pyramidal (107 degrees) was

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10
Q

What shape would 4 electron pairs, 2 bonding pairs and 2 lone pairs have?

A

Bent V-shaped (104.5 degrees)

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11
Q

What shape would 5 electron pairs, 5 bonding pairs and no lone pairs have?

A

Trigonal bipyramidal (90 degrees and 120 degrees)

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12
Q

What shape would 5 electron pairs, 4 bonding pairs and 1 lone pair have?

A

Sea saw

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13
Q

What shape would 5 electron pairs, 3 bonding pairs and 2 lone pairs have?

A

Trigonal planar

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14
Q

What shape would 5 electron pairs, 2 bonding pairs and 3 lone pairs have?

A

Linear

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15
Q

What shape would 6 electron pairs, 6 bonding pairs and no lone pairs have?

A

Octahedral (90 degrees)

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16
Q

What shape would 6 electron pairs, 5 bonding pairs and 1 lone pair have?

A

Square pyramidal

17
Q

What shape would 6 electron pairs, 4 bonding pairs and 2 lone pairs have?

A

Square planar

18
Q

What shape would 6 electron pairs, 3 bonding pairs and 3 lone pairs have?

A

Trigonal planar

19
Q

What shape would 6 electron pairs, 2 bonding pairs and 4 lone pairs have?

A

Linear

Chemistry (W) (3 decks)

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