Exercise 9.11
Neon (atomic number ) neither transfers nor shares its valence electrons. Explain.
Not cross-checked
NCERT prints no numerical answer for this exercise, so this working has not been cross-checked against the book.
Because neon's valence shell is already complete — its configuration is $\displaystyle 2$, $\displaystyle 8$, a full octet.
Atoms lose, gain or share electrons only in order to complete their valence shell and become stable; neon has nothing left to complete.
Its energy is already low, so combining with another atom would not lower it further and would bring no gain in stability.
Neon therefore stays as single atoms, forms no molecules and is chemically unreactive.