Bonding

Question 1

Explain why atoms bond.

Answer 1

Atoms bond because the want a full outer shell of 8 electrons to be stable.

Question 2

What does valency mean?

Answer 2

It is the number of bonds an atom will make.

Question 3

How does the number of electrons link to the group number?

Answer 3

They are the same.

Question 4

What is the connection between the group number and the valency?

Answer 4

Group: 1 2 3 4 5 6 7 8
Valency: 1 2 3 4 3 2 1 0

Question 5

Explain what a covalent bond is.

Answer 5

A covalent bond is the electrostatic force of attraction between a shared pair of electrons and the positive nuclei.

Question 6

What type of bonding has low melting point?

Answer 6

Covalent bonding (Ionic has high).

Question 7

What type of bonding can conduct electricity?

Answer 7

Ionic (but only in solution).

Question 8

Will ionic bonding or covalent bonding dissolve in water?

Answer 8

Ionic bonding.

Question 9

O
/ \
H H
Name the shape.

Answer 9

V-shaped

Question 10

N
/ l \
H H H
Name the shape.

Answer 10

Pyramidal

Question 11

H
                    l
                   C
                /   l   \
              H   H   H
Name the shape.

Answer 11

Tetrahedral

Question 12

H - Cl

Name the shape.

Answer 12

Linear