Iron oxide FeO, crystallises in a cubic lattice with a unit cell edge length of 5.0 Å. If density of the FeO in the crystal is 4.0 ~g ~cm⁻³, then the number of FeO units present per unit cell is _ _ _ _ _. (Nearest integer) Given: Molar mass of Fe and O is 56 and 16 ~g ~mol⁻¹ respectively. N A =6.0 × 10²³ ~mol⁻¹

Solid State: JEE Main 2023 Chemistry question

JEE Main 2023 · 30 Jan, Evening shift · Q15

JEE Main 202330 Jan, Evening shiftChemistryHardSolid State42× since 2002

Iron oxide FeO, crystallises in a cubic lattice with a unit cell edge length of 5.0 Å. If density of the

\mathrm{FeO}

in the crystal is

4.0 \mathrm{~g} \mathrm{~cm}^{-3}

, then the number of

\mathrm{FeO}

units present per unit cell is __________. (Nearest integer) Given: Molar mass of

\mathrm{Fe}

and

\mathrm{O}

is 56 and

16 \mathrm{~g} \mathrm{~mol}^{-1}

respectively.

\mathrm{N}_{\mathrm{A}}=6.0 \times 10^{23} \mathrm{~mol}^{-1}

Your answerType your answer. Integers and decimals are accepted.

JEE Main 2023 Solid State Question with Answer (30 Jan Evening shift, Q15) | JEE Arc