Calcium crystallizes in a face centred cubic unit cell with a = 0.556 nm. Calculate the density if it contains
(i) 0.1 % Frenkel defect
(ii) 0.1 % Schottky defect

Explanation

To solve the problem of calculating the density of calcium with different types of defects, we will follow these steps:

### Given Data:
- Edge length of the unit cell, \( a = 0.556 \, \text{nm} = 0.556 \times 10^{-7} \, \text{cm} \)
- Molar mass of calcium, \( M = 40 \, \text{g/mol} \)
- Avogadro's number, \( N_A = 6.022 \times 10^{23} \, \text{mol}^{-1} \)

### Step 1: Calculate the Density without Defects
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