Chapter 9, Problem 16STP

Interpretation Introduction

Interpretation:

To choose the correct option that is not true of an atom obeying the octet rule.

Concept introduction: When two atoms from covalent bonds, they attain an inert gas configuration with an octet of electrons i.e. ${\text{ns}}^{\text{2}}{\text{p}}^{\text{6}}$ configuration is attained. This is known as octet rule.

Answer to Problem 16STP

The wrong statement is E. will lose electrons.

Explanation of Solution

E. Except helium noble gas has ${\text{ns}}^{\text{2}}{\text{p}}^{\text{6}}$ configuration. Noble gases are very low reactive elements. An atom which can follow octet rule will lose or gain electrons until there are 8 electrons in its valence shell. The given options A, B, C and D are true statement for octet rule. Thus option E is wrong statement.

Conclusion

1. An atom which can obey octet rule that obtains a full set of eight valence electrons.
2. An atom which can obey octet rule that acquires the valence configuration of a noble gas.
3. Electron configuration is unusually stable in an atom which can obey octet rule.
4. An atom which can obey octet rule has a ${\text{s}}^{\text{2}}{\text{p}}^{\text{6}}$ valence configuration.