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JEE Main 2022 (Online) 28th July Morning Shift
Numerical
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An element M crystallises in a body centred cubic unit cell with a cell edge of $$300 \,\mathrm{pm}$$. The density of the element is $$6.0 \mathrm{~g} \mathrm{~cm}^{-3}$$. The number of atoms present in $$180 \mathrm{~g}$$ of the element is ____________ $$\times 10^{23}$$. (Nearest integer)

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JEE Main 2022 (Online) 27th June Morning Shift
Numerical
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Metal deficiency defect is shown by Fe0.93O. In the crystal, some Fe2+ cations are missing and loss of positive charge is compensated by the presence of Fe3+ ions. The percentage of Fe2+ ions in the Fe0.93O crystals is __________. (Nearest integer)

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JEE Main 2022 (Online) 26th June Evening Shift
Numerical
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In a solid AB, A atoms are in ccp arrangement and B atoms occupy all the octahedral sites. If two atoms from the opposite faces are removed, then the resultant stoichiometry of the compound is AxBy. The value of x is ____________. [nearest integer]

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JEE Main 2022 (Online) 25th June Morning Shift
Numerical
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The distance between Na+ and Cl$$-$$ ions in solid NaCl of density 43.1 g cm$$-$$3 is _______________ $$\times$$ 10$$-$$10 m. (Nearest Integer)

(Given : NA = 6.02 $$\times$$ 1023 mol$$-$$1)

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