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What is a planar molecule?

Answer 1

A planar molecule is a way to describe a molecule that lays flat on a particular plane. A plane is the surface that two coordinate axes form (from algebra).

For instance, we conventionally say that #"H"_2"C"="CCl"_2# (1,1-dichloroethylene) lays on the #yz#-plane, and that its #2p_x# atomic orbitals form the #"C"-"C"# #pi# bond, since the principal (#C_2#) rotation axis is along the #"C"="C"# bond, defined as the #z# axis:

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Answer 2

Nicholas Antonuccio

A planar molecule is a molecule in which all the atoms lie in the same plane. This means that the atoms are arranged in a flat, two-dimensional structure, with minimal deviation from the plane.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.