Question

Answers needed ASAP thanks

Answer 1

E

Since it has Tetravalency

D ( it's electronic configuration is 2,8,1)

B

D (since E has more protons, this charge pulls the shells closer. Hence Eis smaller and D is larger)

D2B

Answer 2

1) E will form covalent compound because it have 4 electrons in his last orbit

2) D is the metal having valency 1

3). B is the nonmetal with valency 2

4). D have larger atomic radius thann E. as we move left to right in a period the atomic size decreases because the effective nuclear charge increases which tend to pull the electron closure to the nucleus and reduces the size of atom.

5) D2B is the formula of compound