Question

3] Write the electronic configuration and valency of following elements
1] Silicon 2) Magnesium 3] Oxygen 4 Argon​

Answer 1

Answer:

All elements in group 1 have 1 valence electron so they have a valency of +1 as they will tend to give up 1 electron. This is the same for group 2 which will give up two electrons and group 3 which will give up 3 electron