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`AB` crystallises in a bcc lattice with edge length `qa` equal to `387` pm`.The distance between two oppositely chariged ions in the lattice is

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`AB` crystallises in a bcc lattice with edge length `qa` equal to `387` pm`.The distance between two oppositely chariged ions in the lattice is
A. 335 pm
B. 250 pm
C. 200 pm
D. 300 pm
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Correct Answer - A
Distance between two oppositely charged ions
`(r^(+)+r^(-))=(asqrt(3))/(2)=(387xxsqrt(3))/(2)`
`=335.14` pm
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