JEE Main 2022 · 27 Jun · Shift 1, Chemistry question 81

Metal deficiency defect is shown by $\mathrm{Fe_{0.93}O}$. In the crystal, some $\mathrm{Fe^{2+}}$ cations are missing and loss of positive charge is compensated by the presence of $\mathrm{Fe^{3+}}$ ions. The percentage of $\mathrm{Fe^{2+}}$ ions in the $\mathrm{Fe_{0.93}O}$ crystals is ______. (Nearest integer)