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:

remain same; increase by one ; non - metallic to metallic ; remain same ; metallic to non metallic