If the distance between N a + and C l - ions in NaCl crystal is 'a' pm, the edge length of the unit cell is

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If the distance between

N a^{+}

and

C l^{-}

ions in NaCl crystal is 'a' pm, the edge length of the unit cell is

ChemistrySolid StateNEET

Options:

A 4 a pm
B $\frac{a}{4} p m$
C $\frac{a}{2} p m$
D 2a pm

Solution:

1128 Upvotes Verified Answer

The correct answer is: 2a pm

The edge length = 2

\times

distance between

N a^{+}

and

C l^{-}

= 2 \times a = 2 a

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