Question

Metals like $\mathrm{Na},\mathrm{K},\mathrm{Ca}\mathrm{and}\mathrm{Mg}$ never found in their free state in nature. Explain the statement.

Answer 1

Metals such as Sodium $\left(\mathrm{Na}\right)$, Potassium $\left(\mathrm{K}\right)$, Calcium $\left(\mathrm{Ca}\right)$and Magnesium $\left(\mathrm{Mg}\right)$ are never found in their natural condition since they are very reactive. As a result, it combines with other non-metals to complete its octet, resulting in impure forms. These metals easily give away their outer most electron and forms ions.

According to octet rule, atom can attain maximum of 8 electrons in its valence shell. For example: Chlorine $\left(Cl\right)$ having atomic number 17 with an electronic configuration of $\left(1s^{2}2s^{2}2p^{6}3s^{2}3p^5\right)$ needs only one electron to complete its outermost 8 electrons to complete its shell.