In the rock-salt arrangement, the shortest distance between two $ \mathrm{Na}^{+} $ions having edge length equal to a $ \sqrt{2} $ picometers is

Question

In the rock-salt arrangement, the shortest distance between two $ \mathrm{Na}^{+} $ions having edge length equal to a $ \sqrt{2} $ picometers is, 2a, $ 2 \mathrm{a} \sqrt{2} $, $ \frac{3}{\sqrt{2}} $, a

MARKS App · Accepted Answer

Distance between two Na + is 1 2 times of edge length at the edge centres. Let the edge length = a 2 , and distance between two Na + ions at the edges = d . Hence , d = 2 a 2 2 = a .

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