Question

on the basis of the above table answer the following question
a. which element forms only covalent compounds
b.Which element is a metal with valency 1?
c)Which element is a non-metal with valency two?
d) Out of D and E, which has a bigger atomic radius and why?
e) Write the formula of the compound formed when B combines with D


pls I need it urgently!!!!

Answer 1

a. E

b. D

c.  B

d. E WILL HAVE BECAUSE ATOMIC RADIUS DECREASES IN MOVING FROM LEFT TO RIGHT  ALONGT A PERIOD

e. Na2S