19. A solid AB has NaCl structure. if radius of thecation A'is 120 pm,

1.	19. A solid AB has NaCl structure. if radius of thecation A'is 120 pm, what is the maximum valueof the radius of the anion ?(a) 290 pm(b) 310 pm(e) 534 pm(d) 164 pm
Answer» Answer: 290 pm Explanation: for NACL crystal radius of cation/radius of anion=0.414 rA+/rB- =0.414 rB- = rA+/0.414 =120/0.414 = 290 PPM

19. A solid AB has NaCl structure. if radius of thecation A'is 120 pm, what is the maximum valueof the radius of the anion ?(a) 290 pm(b) 310 pm(e) 534 pm(d) 164 pm

Answer»

Answer:

290 pm

Explanation:

for NACL crystal

radius of cation/radius of anion=0.414

rA+/rB- =0.414

rB- = rA+/0.414 =120/0.414 = 290 PPM