Question

basic concepts!!.......

Answer 1

a)Left to Right.
b)Top to bottom.
c)Top to Bottom
d)Right to left.

2)Yes. This leads to low ionisation energy.

Answer 2

Valency increases from left to right.

Atomic radius increases from top to bottom and right to left.

Chemical reactivity increases from top to bottom for metals.

metallic nature increased from top to bottom.

Yes, radius increases by adding shells.