In the transition of $Zn$ atoms to $Zn^{2+}$ ions,there is a decrease in the

The maximum covalency and highest oxidation state possible for an element with $Z=13$ are respectively.

$A$ compound contains three elements $A$,$B$ and $C$. If the oxidation states are $A = +2$,$B = +5$ and $C = -2$,the possible formula of the compound is

Provide information regarding the oxidation numbers of elements present in the periodic table.

In the periodic table,the valency of elements in any period...

Two elements $X$ and $Y$ have the following electronic configurations: $X = 1s^2, 2s^2 2p^6, 3s^2 3p^6, 4s^2$ and $Y = 1s^2, 2s^2 2p^6, 3s^2 3p^5$. The expected compound formed by the combination of $X$ and $Y$ is: