Group 7 Elements

Question 0

When an alkali metal (group 1) and a halogen (group 7) react what is made?

Answer 0

Metal halide

Question 1

How many electrons do group 7 elements have in their outer shell?

Answer 1

7

Question 2

When sodium and chlorine react what is made?

Answer 2

Sodium chloride

Question 3

When potassium and iodine react what is made?

Answer 3

Potassium iodine

Question 4

Does the reactivity of the halogens increase or decrease down the group?

Answer 4

Decrease

Question 5

When sodium bromide and chlorine react what is made?

Answer 5

Sodium chloride and bromine

Question 6

When sodium iodide and chlorine react what is made?

Answer 6

Sodium chloride and iodine

Question 7

When sodium iodide and bromine react what is made?

Answer 7

Sodium bromide and iodine

Question 8

When group 7 elements react what do they gain?

Answer 8

An electron - outer shell is full (more stable)

Question 9

What is formed when group 7 elements react?

Answer 9

A negative ion

Question 10

Why is a negative ion formed?

Answer 10

The number of protons is now one less than the number of electrons

Question 11

What is gaining electrons described as?

Answer 11

Reduction reaction

Question 12

Why is chlorine more reactive than bromine?

Answer 12

The electron it gains is closer to the nucleus so it is easier to gain it

Question 13

What colour and state is fluorine?

Answer 13

Pale yellow and gas

Question 14

What colour and state is chlorine?

Answer 14

Pale green/yellow and as

Question 15

What colour and state is bromine?

Answer 15

Red/brown and liquid

Question 16

What colour and state is iodine?

Answer 16

Dark purple and solid