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NEET 2019
Exam
NEET
Year
2019
Subject
Chemistry
Chapter
Chemical Bonding and Molecular Structure

NEET 2019 · Chemistry · Chemical Bonding and Molecular Structure

The number of sigma (σ) and pi (π) bonds in pent- 2 -en- 4 -yne is:

The number of sigma (σ)\left(\sigma\right) and pi (π)\left(\pi\right) bonds in pent- 22 -en- 44 -yne is:The number of sigma (σ) and pi (π) bonds in pent- 2 -en- 4 -yne is:

Options

  1. A10σ10\sigma bonds and 3π3\pi bonds
  2. B8σ8\sigma bonds and 5π5\pi bonds
  3. C11σ11\sigma bonds and 2 π\pi bonds
  4. D13σ13\sigma bonds and no π\pi bonds

Correct answer

A. 10σ10\sigma bonds and 3π3\pi bonds

Step-by-step solution

Pent−2−- 2 -en−4−- 4 -yne

The number of sigma (σ) and pi (π) bonds in pent- 2 -en- 4 -yne is:

The correct name should be Pent−3−- 3 -en−1−- 1 -yne

Number of π\pi bonds =3= 3

Number of σ\sigma bonds =10= 10

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