Chapter 7, Problem 62A

Interpretation Introduction

Interpretation:The reason due to which potassium does not bond with neon to form a compound needs to be explained.

Concept introduction:

Molecules are bound together by different types of bonds namely ionic and covalent. Ionic bonds are formed when there is a complete transfer of electrons from one atom to another. These atoms either lose or gain electrons to become negatively or positively charged ions. The forces of attraction between these ions cause ionic bond formation.

Answer to Problem 62A

Potassium and Neon will not form a compound as Neon belongs to the Noble gas group and has complete octet indicating that it cannot form any ion.

Explanation of Solution

The element Potassium has an atomic number of 19 and electronic configuration as ${\text{1s}}^{2}2{\text{s}}^{2}2{\text{p}}^{\text{6}}3{\text{s}}^{2}3{\text{p}}^6{\text{4s}}^1$ . It will lose the outermost electron to become a positive ion.

  $\text{K}\stackrel{-1e^{-}}{\to }{\text{ K}}^{+}$

Neon belongs to the Nobel gas group and has an atomic number of 10 and an electronic configuration as ${\text{1s}}^{2}2{\text{s}}^{2}2{\text{p}}^{\text{6}}$ . This element has a complete octet configuration. It will not lose or gain electrons. Hence, it will not form an ion and therefore a compound with any other element.

Conclusion

Thus, potassium and Neon will not form a compound as Neon belongs to the Noble gas group and has a complete octet indicating that it cannot form any ion.