1.

A given metal crystllizes out with a cubic structure having edge length of 361 pm. If there are four metal stoms in one unit cell. What is the radius of one atom ?

Answer»

80 PM
108 pm
40pm
127 pm

Solution : Z = 4 means structure is fcc, for fcc.
` r = a/(2SQRT2) = ( 361)/( 2 XX 1.414) = 121 . 65 "pm"= 127 "pm" `


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