Consider an ionic solid MX , with NaCl structure. Construct a new structure Z , whose unit cell is constructed from the unit cell of MX , following the sequential instructions given below. Neglect the charge balance. ( i ) Remove all the anions X , except the central one. ( ii ) Replace all the…

Question

Consider an ionic solid MX , with NaCl structure. Construct a new structure Z , whose unit cell is constructed from the unit cell of MX , following the sequential instructions given below. Neglect the charge balance. ( i ) Remove all the anions X , except the central one. ( ii ) Replace all the face centered cations M , by anions X . ( iii ) Remove all the corner cations M . ( iv ) Replace the central anion X , with cation M . The value of n u m b e r &#160; o f &#160; a n i o n s n u m b e r &#160; o f &#160; c a t i o n s in Z is _____.

Aicharya · Accepted Answer

X - &#8658; O . V M + &#8658; FCC M + X ^ - (i) 4 1 (ii) 4 &ndash; 3 3 + 1 (iii) 4 &ndash; 3 &ndash; 1 3 + 1 (iv) 1 3 Z = 3 1 = 3 .

Consider an ionic solid MX , with NaCl structure. Construct a new structure Z , whose unit cell is…

Solution

	$M^{+}$	$X^-$
(i)	4	1
(ii)	4 – 3	3 + 1
(iii)	4 – 3 – 1	3 + 1
(iv)	1	3