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# Phosphorus and nitrogen ions generally get depleted in soil because they usually occur as

$\begin{array}{1 1}(A)\;\text{Neutral ions}\\(B)\;\text{Negatively charged ions}\\(C)\;\text{Positively charged ions}\\(D)\;\text{Both positively and negatively charged but disproportionated mixture}\end{array}$

Phosphorus and nitrogen ions generally get depleted in soil because they usually occur as negatively charged ions
Hence (B) is the correct answer.