Shapes Of Molecules And Ions Flashcards

1
Q

What are the particles in a monoatomic structure and which substances do they include?

A

The particles are atoms, and they include group 0 elements.

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2
Q

What are the particles in a simple molecular structure and which substances do they include?

A

The particles are molecules, and they include most non-metal elements except group 0, and most non-metal compounds.

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3
Q

What are the particles in a giant covalent structure and which substances do they include?

A

The particles are atoms and they include diamond, graphite and silicon dioxide.

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4
Q

What are the particles in an ionic structure and which substances do they include?

A

They particles are ions and they include compounds containing both metals and non-metals.

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5
Q

What are the particles in a metallic structure and which substances do they include?

A

The particles are ions and delocalised electrons and they include metals.

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6
Q

What are the particles in a metallic structure and which substances do they include?

A

The particles are ions and delocalised electrons and they include metals.

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7
Q

What is the name of shape containing 2 electron pairs?

A

Linear.

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8
Q

What is the bond angle of a linear shape?

A

180°

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9
Q

What is the name of the shape containing 3 electron pairs?

A

Trigonal planar.

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10
Q

What is the bond angle of a trigonal planar shape?

A

120°

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11
Q

What is the name of the shape with 4 electron pairs?

A

Tetrahedral.

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12
Q

What is the bond angle in a tetrahedral shape?

A

109.5°

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13
Q

What is the name of the shape with 5 electron pairs?

A

Trigonal pyramidal.

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14
Q

What is the bond angle in a trigonal pyramidal shape?

A

120°, 90°

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15
Q

What is the name of the shape with 6 electron pairs?

A

Octahedral.

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16
Q

What is the bond angle in an octahedral shape?

A

90°

17
Q

For each lone pair around an atom, bond angles are reduced by what?

A

-2.5°

18
Q

What are the variations on shapes with 3 electron pairs?

A
  1. Trigonal planar - 3 bonding pairs, 0 lone pairs
  2. Bent - 2 bonding pairs, 1 lone pair
19
Q

What are the variations on shapes with 4 electron pairs?

A
  1. Tetrahedral - 4 bonding pairs, 0 lone pairs
  2. Trigonal pyramidal - 3 bonding pairs, 1 lone pair
  3. Bent - 2 bonding pairs, 2 lone pairs