In the formula $\mathrm{Fe_2O_3 \cdot nH_2O}$ for rust, the value of n is—

Question

Accepted Answer

variable integer (1, 2, 3, …)

Answer

always 1

Answer

always 2

Answer

always 0

In the formula Fe2O3⋅nH2O\mathrm{Fe_2O_3 \cdot nH_2O}Fe2​O3​⋅nH2​O for rust, the value of n is—