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Question

Which of these has a triple covalent bond?

A
PH3
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B
CO2
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C
AlCl3
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D
C2H2
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Solution

The correct option is D C2H2

A triple covalent bond contains one sigma bond and two pi bonds where six electrons are being shared. They are more rigid than double bonds and have a larger electron density. The most common triple bonds are on carbons like C2H2. The skeletal form to draw a triple bond is three straight lines connecting the two atoms.

CHCH


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