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Question
Which carbon atom will show minimum electronegativity -
H 1C  2C - C3H - C4H - C5H      
Options:
A .  Fifth
B .  Third
C .  First
D .  Second
Answer: Option A
:
A
sp3 - hybridised carbon has 25% s character , 75% p character.
sp2 33.3% s character, 66.6% p character
sp 50% s and 50% p
More the s character, more is the electronegativity.
H C1 C2 - C3H =C4H - C5H3
1 & 2 sp
5th carbon issp3
3 & 4 sp2

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