Exams › JEE Advanced › Chemistry

From the list Al2(CH3)6, Si2H6, B2H6, C2H6, Si2Cl6, Al2Cl6, how many molecules do NOT contain a 3-centre-2-electron (3c-2e) bond?

1. 1
2. 2
3. 3
4. 4

Correct answer: 4

Solution

Only B2H6 and Al2(CH3)6 have 3c-2e bonds; the remaining four (Si2H6, C2H6, Si2Cl6, Al2Cl6) do not, so the count is 4.

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