Amongst the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is/are

Question

Amongst the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is/are (A)  (B)  (C) H2C=C=0  (D) H2C=C=CH2

Tardigrade Admin · Accepted Answer

In both (b) and (c), all the atoms are present in one single plane
In (a) 1, 3-butadiene, conformational change is possible
between

C_{2} - C_{3}

bond in which atoms will be present in more
than one single plane.
In (d) allene, the terminals H-C-H planes are perpendicular
to one another.

Q. Amongst the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is/are

$H_{2} C = C = 0$

$H_{2} C = C = C H_{2}$

In both (b) and (c), all the atoms are present in one single plane
In (a) 1, 3-butadiene, conformational change is possible
between $C_{2} - C_{3}$ bond in which atoms will be present in more
than one single plane.
In (d) allene, the terminals H-C-H planes are perpendicular
to one another.

Q. Amongst the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is/are

H2​C=C=0

H2​C=C=CH2​

In both (b) and (c), all the atoms are present in one single plane In (a) 1, 3-butadiene, conformational change is possible between C2​−C3​ bond in which atoms will be present in more than one single plane. In (d) allene, the terminals H-C-H planes are perpendicular to one another.

$H_{2} C = C = 0$

$H_{2} C = C = C H_{2}$

In both (b) and (c), all the atoms are present in one single plane
In (a) 1, 3-butadiene, conformational change is possible
between $C_{2} - C_{3}$ bond in which atoms will be present in more
than one single plane.
In (d) allene, the terminals H-C-H planes are perpendicular
to one another.