Question

identify the possible resonance structure(s) for n2s. check all that apply.
□ :n=s=n:
□ :n≡s—n:
□ :n—n—s:
□ :n—s≡n:
□ :n=n=s:
□ :n≡n—s:
□ :n—s—n:
□ :n—n≡s:
□ none of the above

Explanation:

Resonance structures are different Lewis - dot structures that contribute to the overall structure of a molecule. For $N_2S$, we consider the octet rule and the number of valence electrons. Nitrogen has 5 valence electrons and sulfur has 6 valence electrons, so in $N_2S$ there are a total of $2\times5 + 6=16$ valence electrons. We check each structure for proper electron - distribution and fulfillment of the octet rule for each atom.

Answer:

$\ddot{N}=S=\ddot{N}:$, $:N\equiv S-\ddot{N}:$, $\ddot{N}-N=\ddot{S}:$, $\ddot{N}-S\equiv N:$, $:N\equiv N-\ddot{S}:$