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1 Solid State

The edge length of face centered unit cube cell is 506pm. If the radius of the cations 110pm, the radius of the anion is-

1) 288 pm
2) 398 pm
3) 144 pm
4) 618 pm

Option 1

Option 2

Option 3 Solution:

Solution

$$a=2({ r }^{ + }+{ r }^{ - })\\ a=2(110+{ r }^{ - })\\ 508=2(110+{ r }^{ - })\\ r=144pm$$

Option 4

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