Question

(a) which element will form only covalent compounds?
(b) what is the atomic no.and valency of element A
(c) out of d and e which one has more atomic radius and why?
(d) write a common name for the group of elements c and f​

Answer 1

Answer:

a) Sc

b) Mn - 25 atomic number

valency - 1

c) element d has more atomic radius than element e because they has less atomic number .

Radius of elements in modern periodic decrease with increase in atomic number.

c) Ne

Ar

Answer 2

Answer:

nice bio siso.

Explanation:

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