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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Bidyut sinha
please see attached picture.Actually , in cases of FCC structure, allowed reflections are either all odd or all even..Now here k+ and cl- are identical.So for Kcl having two identical scale factor follows reflection =2× (simple cubic reflection)= 2×{(1,0,0) ,(1,1,1)...}=(2,0,0),(2,2,2).... so here option (d)(2,0,0) is correct.