Four elements P, Q, R and S have atomic numbers 12,13,14 and 15 respec

1.	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» (i) 3 (+3) (ii) The elements P and Q are metals while the elements R and S are non-metals. (iii) The element P will form the most basic oxide of formula PO.

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»

(i) 3 (+3)

(ii) The elements P and Q are metals while the elements R and S are non-metals.

(iii) The element P will form the most basic oxide of formula PO.