The distance between \( \text{Na}^+ \) and \( \text{Cl}^- \) ions in solid \( \text{NaCl} \) of density \( 43.1 \, \text{g}\,\text{cm}^{-3} \) is __________ \( \times 10^{-10} \, \text{m} \) (Nearest Integer)
(Given : \( N_A = 6.02 \times 10^{23} \, \text{mol}^{-1} \))
