Question

Atomic numbers of the following elements are given below:
A = 8; B = 17; C = 11; E = 20
State which of the following is a divalent metal.
State which of the following is a univalent non-metal.
State the formula of the compound formed between E and B.
State the type of bonding between C and A.
State the number of covalent bonds formed between in a molecule of A2.​

Answer 1

A=8 oxygen

B=17 nitrogen

C=11 chlorine

E=20 calcium

1. A,B,C

2. A,B,C

3. covalent

4. ionic

5. 3