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CBSE Class 12-science Answered

Potassium has a bcc structure with nearest neighbour 4.52A. Its atomic weight is 39, its density will be ___________ ?
Asked by SURESH C c | 31 Aug, 2012, 10:34: PM
answered-by-expert Expert Answer

D =2r or ?3 a /2

a =2d /?3

p = Z M /N xa3

   =2 x 39x 1.732  / 6.023 x 1023 x 2 x 4.52 x10 -8

  =135.096 / 54.44 x 1015

  =2.481 x 10 -15
Answered by | 03 Sep, 2012, 10:45: AM

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