Nivedha posted an Question
October 15, 2020 • 01:55 am 30 points
  • CSIR NET
  • Chemical Sciences

Lf edge length of fcc unit cell is double d. number of next nearest neighbour is (c) tetragonal (a) 6 (b) 8 (c) 12 (d) 24

lf edge length of fcc unit cell is double d. Number of next nearest neighbour is (c) tetragonal (a) 6 (b) 8 (c) 12 (d) 24

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    Dinesh khalmaniya 1 Best Answer

    option A if we doubled the edge length, distance between corners atoms become doubled but face centred atoms remains on their original position. so second nearst atom will be from 2a distance apart and number of second nearest atoms will be 6

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