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The edge length of sodium chloride unit cell is 564 pm. If the size of C l - ion is 181 pm. The size of N a + ion will be

Options

  1. A101 pm
  2. B181 pm
  3. C410 pm
  4. D202 pm

Correct answer

A. 101 pm

Step-by-step solution

2 r + + r - = a 2 r N a + r C l - = 564 pm r Na + = 564 2 − 181 = 101   pm

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