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Group Theory

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Total cards: 7•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (7)

#1
Front (Question)

How can we predict the IR and Raman spectra of compounds?

Back (Answer)

Using symmetry operations.

#2
Front (Question)

Define what -1, 1 and 0 mean in terms of each operation.

Back (Answer)

Change in axis: -1 per axis No change in axis: +1 per axis Atoms move: 0 per axis

#3
Front (Question)

What are A and B?

Back (Answer)

A=symmetrical with respect to primary axis B=anti-symmetrical with respect to primary axis.

#4
Front (Question)

What is E? What is T?

Back (Answer)

E=Double degenerate T=Triple degenerate

#5
Front (Question)

What is g and what is u?

Back (Answer)

G (Gerade)=Symmetrical with respect to inverse U (Ungerade)=Asymmetrical with respect to inverse

#6
Front (Question)

What is the subscript 1 and 2?

Back (Answer)

1=Symmetric with respect to principle axis 2=Asymmetric with respect to principle axis

#7
Front (Question)

What is ‘ and ‘’?

Back (Answer)

‘=Symmetric with respect to sigma h (horizontal reflection) “=Asymmetric with respect to sigma h (horizontal reflection)