Q. Which is true for an element $R$ present in III group of the periodic table?
A) It has oxidation state of + 4
B) It is gas at room temperature
C) It forms $R_{2}O_{3}$
D) It forms $RX_{2}$
Explanation
(c)
$Al + III\ group\ \longrightarrow forms\ Al_{2}O_{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.