Question

On moving from left to right in a period, the number of electron shells___________________
(remain same/ increase by one), the number of valence electrons____________ (remain same/increase by one) and the elements show a transition from [Non-metallic to metallic/metallic to non-metallic) character. On moving down a group, the valence electrons__________
(remain same/increase by one) and the elements show a transition from___________________(non-metallic to metallic/metallic to non-metallic) character.​

Answer 1

Answer:

1. Remains the same
2. Increases by one
3. Metallic to non-metallic
4. Remains the same
5. Non-metallic to metallic