Answer:
Explanation:
charge on divalent cation = 2 x 1.6 x 10⁻¹⁹ C
charge on monovalent anion = 1.6 x 10⁻¹⁹ C
distance between these charges = .065 + .126 nm
= .191 x 10⁻⁹ m
force of attraction
= k q₁q₂ / r²
= 9 x 10⁹ x 2 x 1.6 x 10⁻¹⁹ x 1.6 x 10⁻¹⁹ / ( .191 x 10⁻⁹ )²
= 1263.12 x 10⁻¹¹ N .
