Question

Four elements P, Q, R, and S have atomic numbers 12, 13, 14 and 15 respectively. Answer the following questions giving reasons.
(i) What is the valency of Q?
(ii) Classify these elements as metals and non-metals.
(iii) Which of these elements will form the most basic oxide?

Answer 1

Answer:

Explanation:

1)the valency of q is 3

2) P and Q are metals while S is a non-metal, R is a metalloid.

3)P