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A solid AB has NaCl type statement for i...

A solid AB has NaCl type statement for ionic solids in which positive and negative ions are held by strong electrostatic attractive forces ?

A

`190.2 "pm"`

B

`540.13 "pm"`

C

`525 "pm"`

D

`78.12 "pm"`

Text Solution

Verified by Experts

The correct Answer is:
A
For NaCl (fcc) structure
`r_(c)+r_(a)=a/2`
`r_(a)=a/2-r_(c)=(580.4)/2-100`
`=290.2-100=190.2 "pm"`
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