Electrovalent compounds are

Electrolytes are compounds containing

The electronic configurations of four elements $L$,$P$,$Q$,and $R$ are given as: $L (1s^2, 2s^2 2p^4)$; $Q (1s^2, 2s^2 2p^6, 3s^2 3p^5)$; $P (1s^2, 2s^2 2p^6, 3s^1)$; $R (1s^2, 2s^2 2p^6, 3s^2)$. The formulas of the ionic compounds that can be formed between these elements are:

If an element in group $2$ forms a compound with an element in group $17$ of the periodic table,the compound formed is likely to

Which type of bonding exists in $Li_2O$ and $CaF_2$ respectively?

In a crystal,cations and anions are held together by