Question

The cyclic hydrocarbon(a) has a molecular formula of c6h6.It is a planar molecule.In a all the c-c bonds have the same bond length.Then the angle c-c-c is

Answer 1

In benzene all 'c'- atoms are

sp2 hybridized and they also exhibit resonance .

Explanation:

It shows partial double bond character, as it's bond length is intermediate between C=C(1.34A0) and C-C(1.54A0)

The actual structure of benzene is a hybrid, with six delocalised π-electrons.
This structure explains it's stability and low reactivity.
All C-C bonds show sp2−sp2 overlap sideways to form three π- bonds
Resonance hybrid shows properties of all possible resonating structures with intermediate values.
Resonance concept is purely hypothetical, yet, it helps.
The bond length in benzene ring is 1.39A0

Answer 2

HEY MATE!

HERE IS YOUR ANSWER:

C6H6 is a BENZENE which forms a hexagone.

Each angle in a hexagon is 120°

Hence c-c-c angle ia also 120°.

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HOPE IT HELPED ^_^