Question

Draw orbital diagram C2H2

Answer 1

there is two pi bond and two sigma bond.

Answer 2

Orbital diagram of acetylene or ethyne $(C_2H_2)$

• In the given compound called acetylene, there are 2 carbons and 2 hydrogen atoms present.
• The both carbon atoms present in it are sp-hybridised. One of the sp-hybrid orbitals overlaps with sp-hybrid orbital of the other carbon atom to form a (sp-sp) sigma bond.
• The remaining two sp hybrid orbitals of two carbon atoms overlap with the s-orbitals of two hydrogen atoms to form two sigma bonds.
• The unhybridized $p_y$ and $p_z$ orbitals of two carbon atoms overlap laterally to form two $\pi$-bonds.
• The diagram of above mentioned step is given in the attachment.

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