(a) The lists below show wrongly paired molecules or ions and point groups. Assign the cor...

(a) The lists below show wrongly paired molecules or ions and point groups. Assign the correct point group to each species.

Molecule or ion	Point group
[H30] +	^3h
C2H4	Dooh
CH2C12	Td
so3	c3v
CBr4	c„v
[icur	Alb.
HCN	^4h
Br2	c2v

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(a)    A molecule X2FIft belongs to the D3d point group. Does the molecule have an eclipsed or a staggered conformation?

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(b)   Figure 5.35 shows the lowest energy a]g MO in ethane If the molecule had an eclipsed rather than a staggered conformation, what would be the symmetry label of the corresponding MO?