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Physical Chemistry

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9 Mar 2010 08:15:53 IST

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Copper atom question

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The density of copper metal is 8.95 g/cm3. If the radius of a copper atom is 127.8 pm, what type of unit cell it forms?From CBSE XII board.

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rakesh vaishnav

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9 Mar 2010 08:58:03 IST

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1. calculate density by putting Z=1 or 2 or 4 one by one also put value of edge lenth according to crystal lattice(SCC, BCC, FCC)2. ANSWER which give you density equal to 8.95gm/cc that is your answer3. correct ANSWER is FCC lattice

Abhishek

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9 Mar 2010 10:02:44 IST

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Trial and error is the only way then?

chetanbathija

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9 Mar 2010 10:09:04 IST

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use the formula d=n*M /N*Vwhere n=is what u have to findM=molecular weightN=avogadro noV=volume

edison

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28 Jun 2010 17:34:53 IST

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That's perfect formula suggested by Chetan

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