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Question

Which of the following compound is having maximum number of atoms in same plane?

A
Al2Me6
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B
B2H6
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C
Be2H4
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D
C3H4
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Solution

The correct option is A Al2Me6
a) Structure of Al2Me6 is
Maximum number of atoms that can lie in the same plane are 10 ( 2 Al, 4 C and 4 H atoms).

b) Structure of B2H6 is:
So, maximum number of atoms that can lie same plane = 6 ( 2 B atoms and 4 terminal hydrogen atoms)


c) Structure of Be2H4 is:

So, Number of atoms in same plane = 6 ( 2 Be atoms and 4 hydrogen atoms).

d) Stucture of C3H4 is:

It is called as allene with even number of π bonds and thus is not planar. The two hydrogens are in the plane and other two are above and below the plane.
So, Number of atoms in same plane = 5 ( 3 carbon atoms and 2 hydrogen atoms)

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