Question

The most dominant exchangeable cation in the earth's crust

• A. Aluminium
• B. Calcium
• C. Sodium
• D. Magnesium

Hint:

Under normal fertile soil conditions, the typical proportion of exchangeable cations follows the order: \(\text{Ca}^{2+} \gt \text{Mg}^{2+} \gt \text{K}^+ \approx \text{Na}^+\).

Answer 1

The Correct Option is B