Which is true for an element $R$ present in III group of the periodic table
It is gas at room temperature
It has oxidation state of $ + \,4$
It forms ${R_2}{O_3}$
It forms $R{X_2}$
Discuss the pattern of variation in the oxidation states of
$(i)$ $B$ to $Tl$ and $(ii)$ $C$ to $Pb$.
Explain physical and chemical properties of borax.
Which of the following doesn't exist
In electrolysis of aluminium oxide which of the following is added to accelerate the process
Common alum is