Consider the bec unit cells of the solids 1 and 2 with the position of atoms as shown below. The...

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Consider the bec unit cells of the solids 1 and 2 with the position of atoms as shown below. The radius of
\( P \) atom B is twice that of atom \( A \). The unit cell edge length is \( 50 \% \) more in solid 2 than in 1 . What is the
W approximate packing efficiency in solid 2 ?
|JEE Main-2019 (April)|
Solid 1
Solid 2
(1) \( 45 \% \)
(2) \( 65 \% \)
(3) \( 90 \% \)
(4) \( 75 \% \)
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