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Reshav posted an Question

August 24, 2020 • 13:49 pm

30 points

IIT JAM
Chemistry (CY)

Which one is gerade and ungerade and how?

3 Answer(s)

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Boddu rama krishna

second one is ungerade
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Suman Kumar

Ist one is gerade as sigma bond are always gerade
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2nd one is ungerade
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Check along only internuclear axis
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Priyanshu kumar

check this reshav👇
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An alternative method for determining the symmetry of the molecular orbital is to rotate the orbital about the line joining the two nuclei and then rotate the orbital about the line perpendicular to this. If the sign of the lobes remains the same, the orbital is gerade, and if the sign changes, the orbital is ungerade
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First rotate the orbital about the line joining the two nuclei and then rotate the orbital about the line perependicular to this..
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sir is question me gerade kon sa hoga?
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reshav in generally always sigma bonding orbitals are gerade while sigma anti bonding,pi bonding and pi antibonding..are ungerade
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So here in first case s-p mixing bonding case along internuclear axis it is gerade and in antibonding case it is ungerade
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got it reshav??
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Dinesh khalmaniya 1

hope this will help you 🙏🙏
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Dinesh khalmaniya 1 Best Answer

check it
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When a point on an orbital is inverted and equal distance through the centre of the molecule, the orbital is said to be gerade(g) if it has the same sign at the two points ,otherwise it is said to be ungerade(u). ... If there were four s orbitals, that would have made some sense.
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check it
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