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Physical Chemistry

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 Joined: 17 Apr 2012 Post: 18
4 May 2012 09:57:41 IST
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photoelectric effect
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Calculate the threshold frequency of metal if the binding energy is 180.69KJ/mole.Please write the steps also.

Cool goIITian

Joined: 29 Mar 2012
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4 May 2012 11:03:47 IST
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h*threshold frequency(K)= binding energy

K=180.69/h

New kid on the Block

Joined: 17 Apr 2012
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4 May 2012 11:15:54 IST
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New kid on the Block

Joined: 31 Mar 2012
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4 May 2012 12:07:42 IST
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binding energy of electron = -180.69 kj/mol (since it is bound to the nucleus)

therefore it is the negative of the binding energy of the electron f the electron that need to be supplied to cause its ionisation.

therefore i,E = 180.69 Kj/mole.

Thank You

New kid on the Block

Joined: 17 Apr 2012
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4 May 2012 12:31:48 IST
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So what is the frequency?

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