Question

question ⓘ
identify the formula for permanganic acid.
answer
$h_2mno_4$
$hmno_4$
$hmno$
$h_2mno$
i dont know yet

Explanation:

Permanganic acid is derived from the permanganate ion ($\text{MnO}_4^-$), which has a -1 charge. To form a neutral acid, one hydrogen ion ($\text{H}^+$) combines with the permanganate ion, resulting in the formula $\text{HMnO}_4$.

Answer:

B. $\text{HMnO}_4$