Assertion (A) : Mendeleeff placed Be, Mg and Ca in one group. Reason (R) : When Be, Mg and Ca react with oxygen and form BeO, MgO and CaO.
Assertion (A) : Mendeleeff placed Be, Mg and Ca in one group. Reason (R) : When Be, Mg and Ca react with oxygen and form BeO, MgO and CaO.