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Which of the following pair of molecules contain odd electron molecule and an expanded octet molecule? (1) BCl3 and SF6 (2) NO and H2SO4 (3) SF6 and H2SO4 (4) BCl3 and NO

1. BCl3 and SF6
2. NO and H2SO4
3. SF6 and H2SO4
4. BCl3 and NO

Correct answer: NO and H2SO4

Solution

NO is an odd electron molecule due to its unpaired electron, while H2SO4 has an expanded octet as it can accommodate more than eight electrons around the sulfur atom, making this pair the correct choice.

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