Tetravalency of carbon, hybridization and shapes
- The number of sigma (σ) and pi (π) bonds in pent-2-en-4-yne is : Answer: 1. 10 σ bonds and 3 π bonds Count every bond in pent-2-en-4-yne, CH₃-CH=CH-Cequiv CH . A single bond is one σ ; a double bond is 1 σ... 1
- Which of the following molecules represents the order of hybridisation sp^2, sp^2, sp, sp from left to right atoms ? Answer: 3. CH ₂ =CH - C equiv CH A carbon in a double bond is sp² , one in a triple bond is sp . mathrmCH₂=CH-CequivCH has carbons sp²,sp²,s... 1
- In which of the following molecules, all atoms are coplanar? Answer: 4. [structure shown in figure] Key idea: all atoms are coplanar only if every atom is sp2 or sp (no sp3 carbon or its hydrogens). Cy... 1
- The pair of electron in the given carbanion, CH_3C C^, is present in which of the following orbitals ? Answer: 4. sp Key idea: the carbanion carbon in CH₃Cequiv C^- is triply bonded to another carbon, so it has 2 regions of electron density an... 1