Molecular geometry

Question 1

What is a bonding pair?

Answer 1

A pair formed between two atoms ( one electron from each atom)

Question 2

What is a lone pair?

Answer 2

A lone pair is an unpaired pair of electrons.

Question 3

What do we call a molecule which has 2 bonding pairs, and 0 lone pairs?

Answer 3

Name : Linear

Question 4

What do we call a molecule which has 3 bonding pairs, and 0 lone pairs?

Answer 4

name : Trigonal planar

Question 5

what do we call a molecule which has 4 bonding pairs, and 0 lone pairs?

Answer 5

name: tetrahedral

Question 6

What do you call a molecule which has 2 bonding pairs, and one lone pair?

Answer 6

name: Bent - V - shape.

Question 7

What do you call a molecule which has 3 bonding pairs, and one lone pair?

Answer 7

Name: trigonal pyramidal

Question 8

What do you call a molecule with 2 bonding pairs, and 2 lone pairs?

Answer 8

name: bent

Question 9

What do you call a molecule which has 5 bonding pairs, and 0 lone pairs?

Answer 9

name: trigonal bipyramidal

Question 10

What do you call a molecule which has 4 bonding pairs, and 1 lone pair?

Answer 10

name: seesaw

Question 11

What do you call a molecule which has 3 bonding pairs, and 2 lone pairs?

Answer 11

name : T - shaped.

Question 12

What do you call a molecule with 6 bonding pairs, and 0 lone pairs?

Answer 12

name: octahedral

Question 13

What do you call a molecule with 4 bonding pairs, and 2 lone pairs?

Answer 13

name: square planar

Question 14

what is the main purpose of a bond?

Answer 14

To repel as further away as possible from all the other bonds.

Question 15

put the following in order, from strongest repulsion to weakest repulsion: Lone pair - bond pair, Lone pair - lone pair, bond pair - bond pair.

Answer 15

1. Lone pair - lone pair
2. lone pair - bonding pair
3. bonding pair - bonding pair.

Question 16

why does the bond angle decrease, whenever we have a lone pair, instead of a bonding pair?

Answer 16

This is because lone pairs, repel more than bonding pairs. This means the distance between the bonding pairs will shorten, thus, decreasing the bond angle.

Question 17

what is the bond angle in a linear molecule

Answer 17

180 degrees.

Question 18

what is the bond angle in a trigonal planar?

Answer 18

120 degrees

Question 19

what is the bond angle in a tetrahedral molecule?

Answer 19

109.5

Question 20

what is the bond angle in a bent V shape (2 bonding pars, and one lone pair) molecule?

Answer 20

118 degrees

Question 21

what is the bond angle in a trigonal pyramidal molecule?

Answer 21

107 degrees.

Question 22

what is the bond angle in a bent (2 bonding pairs, and 2 lone pairs) molecule?

Answer 22

104.5 degrees.

Question 23

what is the bond angle in a trigonal bipyramidal?

Answer 23

120 degrees, and 90 degrees.

Question 24

what is the bond angle in a seesaw molecule?

Answer 24

between 100-119 degrees
and
between 85-89 degrees.

Question 25

what is the bond angle in a T-shaped molecule?

Answer 25

88 degrees.

Question 26

what is the bond angle in an octahedral molecule?

Answer 26

90 degrees.

Question 27

what is the bond angle in a square planer molecule?

Answer 27

90 degrees.