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Chemical Bonding and Molecular Structure · Question 33

JEE Main 2025 (Online) 29th January Morning ShiftNumericalEasy📈 Topic in 3% papers+4
1

The sum of sigma ( ) and pi ( ) bonds in Hex-1,3-dien-5-yne is .

Answer

15

Solution

Hex-1,3-dien-5-yne: CH2=CH-CH=CH-C CH (C6H6)

bonds: C–C bonds = 5, C–H bonds = 6 total = 11

bonds: two C=C (1 each) + one C C (2) total = 4

+ = 11 + 4 = 15

Answer: 15

JEE Main 2025 (Online) 29th January Morning Shift

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2

The molecules having square pyramidal geometry are

  1. BrF5 & PCl5
  2. SbF5 & PCl5
  3. BrF5 & XeOF4
  4. SbF5 & XeOF4
JEE Main 2025 (Online) 28th January Morning Shift
3

Total number of molecules/species from the following which will be paramagnetic is . O2, O2+, O2-, NO, NO2, CO, K2[NiCl4], [Co(NH3)6]Cl3, K2[Ni(CN)4]

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