MCQ
Most stable conformation of $n-$ butane is
- AGauche
- ✓Anti
- CPartially eclipsed
- DFully eclipsed
✓
Answer
Correct option: B.
Anti
b
The lowest energy conformation will be the one, in which the two methyl groups are as far apart as possible i.e., $180^{\circ}$ away form each other. This conformation will be maximum staggered and is called anti conformation. Other conformations can be obtained by rotating one of the $C _2$ or $C _3$ carbon atoms through an angle of $60^{\circ}$ as shown ahead.
The lowest energy conformation will be the one, in which the two methyl groups are as far apart as possible i.e., $180^{\circ}$ away form each other. This conformation will be maximum staggered and is called anti conformation. Other conformations can be obtained by rotating one of the $C _2$ or $C _3$ carbon atoms through an angle of $60^{\circ}$ as shown ahead.
The order of stability of these conformations is, Anti $\,>\,$ Skew or Gauche $\,>\,$ Eclipsed $\,>\,$ Fully eclipsed.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Nitrobenzene on treatment with zinc dust and aqueous ammonium chloride gives
Among the following compounds, which will give maximum enol content in solution
Are which type of isomers
$1, 2, 3$ -trihydroxybenzene is also known as
→Identify pair of compounds which can be distinguished by iodoform test?
Excess of $KI $ reacts with $CuS{O_4}$ solution and then $N{a_2}{S_2}{O_3}$ solution is added to it. Which of the statements is incorrect for this reaction
→The rate of reaction, $A + B + C \longrightarrow P$ is given by
→$r = \frac{{ - d\left[ A \right]}}{{dt}} = K\,{\left[ A \right]^{\frac{1}{2}}}\,{\left[ B \right]^{\frac{1}{2}}}\,{\left[ C \right]^{\frac{1}{4}}}$
The order of reaction is
Which of the following molecules has axis of symmetry and a coaxial plane of symmetry ?
Only an aldehyde having..... can undergo the aldol condensation
It is true that :