Draw electron dot diagrams to depict the formation of:

Magnesium oxide from ${}_{12}\mathrm{Mg}^{24}$ and ${}_8\mathrm{O}^{16}$

Draw electron dot diagram to depict the formation of molecule of chlorine from two atoms of ${}_{17}\mathrm{Cl}^{35}$.

Which of the following is not a common characteristic of an electrovalent compound ?

What are the term defined by the following :
A bond formed by a shared pair of electrons, each bonding atom contributing one electrons to the pair.