Which of the following molecules has five σ bonds and one π bond?

Question

Which of the following molecules has five σ bonds and one π bond?

(a) $C_{2} H_{6}$ $"C"_2"H"_6$
(b) $C_{2} H_{3} Cl$ $"C"_2"H"_3"Cl"$
(c) $C_{2} H_{2} Cl$ $"C"_2"H"_2"Cl"$
(d) $C_{2} H_{4}$ $"C"_2"H"_4$

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Answer 1 · 2017-04-18T02:37:00

The correct answer is d) $C_{2} H_{4}$ $"C"_2"H"_4$ .

Explanation:

a) $C_{2} H_{6}$ $"C"_2"H"_6$

www.chem1.com

Ethane has six σ bonds formed by the overlap of ${sp}^{3}$ $bb"sp"^3$ and $s$ $"s"$ orbitals.

b) $C_{2} H_{3} Cl$ $"C"_2"H"_3"Cl"$

web.chem.ucla.edu

This compound has only three σ bonds (the $C-H$ $"C-H"$ bonds) formed by the overlap of ${sp}^{2}$ $"sp"^2$ and $s$ $"s"$ orbitals.

c) $C_{2} H_{2} Cl$ $"C"_2"H"_2"Cl"$

This compound does not exist.

d) $C_{2} H_{4}$ $"C"_2"H"_4$

wps.prenhall.com

Ethylene has (i) four σ bonds formed by the overlapping of ${sp}^{2}$ $"sp"^2$ and $s$ $"s"$ orbitals;
(ii) one σ bond formed by overlapping of two ${sp}^{2}$ $"sp"^2$ orbital; and (iii) one π bond formed by overlap of two $p$ $"p"$ orbitals.

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Which of the following molecules has five σ bonds and one π bond?

(a) $C_{2} H_{6}$ $"C"_2"H"_6$
(b) $C_{2} H_{3} Cl$ $"C"_2"H"_3"Cl"$
(c) $C_{2} H_{2} Cl$ $"C"_2"H"_2"Cl"$
(d) $C_{2} H_{4}$ $"C"_2"H"_4$

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Explanation:

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Which of the following molecules has five σ bonds and one π bond?

(a) "C"_2"H"_6C2H6"C"_2"H"_6 (b) "C"_2"H"_3"Cl"C2H3Cl"C"_2"H"_3"Cl" (c) "C"_2"H"_2"Cl"C2H2Cl"C"_2"H"_2"Cl" (d) "C"_2"H"_4C2H4"C"_2"H"_4

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Explanation:

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(a) $C_{2} H_{6}$ $"C"_2"H"_6$
(b) $C_{2} H_{3} Cl$ $"C"_2"H"_3"Cl"$
(c) $C_{2} H_{2} Cl$ $"C"_2"H"_2"Cl"$
(d) $C_{2} H_{4}$ $"C"_2"H"_4$