Octet rule is obeyed in
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- $SCl_2$
- $PF_5$
- $SF_6$
- $BCl_3$
$H_2SO_4$
The Correct Option is A
Solution and Explanation
Step 1: The octet rule states that atoms tend to form bonds in such a way that they achieve a stable electron configuration with 8 valence electrons. Step 2: In $SCl_2$ (Sulfur dichloride), sulfur forms two single bonds with chlorine, fulfilling its octet requirement (6 valence electrons + 2 shared electrons = 8).
Step 3: The other molecules: - $PF_5$ and $SF_6$ have expanded octets.
- $BCl_3$ does not complete the octet (Boron has only 6 valence electrons).
- $H_2SO_4$ involves delocalized bonding and resonance.
Step 4: Since only $SCl_2$ strictly follows the octet rule, the correct answer is (A).
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