First slide

Alkanes

Question

Which of the following statements are not correct for alkanes?

Moderate

A

All C—H and C—C bonds have a length of 1.112 Å and 1.54 Å respectively
B

All bond angles are tetrahedral, having a value of 109.5°
C

The C—C chain is linear and not zig-zag
D

All alkanes exhibit isomerism

Solution

alkanes can show conformational isomerism from two carbons, methane do not show isomerism.

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