Question

Fill in the blank and complete the analogy by choosing the correct alternative from the options given.

Helium : Duplet state : : Argon : _________

• A. Duplet state
• B. Triplet state
• C. Octet state
• D. None of the above

Answer 1

The correct option is C Octet state

Helium $\left(He\right)$ belongs to Noble gas family but it has only two electrons in the valence shell, $1s^2$. So, $He$ exhibits a stable duplet state.

Since Argon $\left(Ar\right)$ has 8 electrons in its outermost shell. Hence, Argon possesses an octet state.

So, the correct option is $C$.