Question

13. Which is true for an element R present in III group of the periodic table
(a) It is gas at room temperature
(b) It has oxidation state of +4
(c) It forms R203
(d) It forms RX2​

Answer 1

Answer:

An IIIA group element has valency 3. So they form an oxide of type $R2o3$

Answer 2

Answer:

(C) It forms R2O3 Is true for an element R present..........table