Solid State · Question 1

JEE Advanced 2025 Paper 2NumericalEasy📈 Topic in 17% papers+4

The density (in g cm-3) of the metal which forms a cubic close packed (ccp) lattice with an axial distance (edge length) equal to 400 pm is . Use: Atomic mass of metal = 105.6 amu and Avogadro’s constant = 6 1023 mol-1

Answer

10.85 to 11.1

Solution

= ZMNA a3, ccp (fcc): Z = 4.

a3 = (400 10-10 cm)3 = 6.4 10-23 cm3

= 4 105.66 1023 6.4 10-23 = 422.438.4 = 11.0 g cm-3

Answer: 11.00

JEE Advanced 2025 Paper 2

Keep practising — Solid State

In a metal deficient oxide sample, MXY2O4 (M and Y are metals), M is present in both +2 and +3 oxidation states and Y is in +3 oxidation state. If the fraction of M2+ ions present in M is 13, the value of X is .

0.25
0.33
0.67
0.75

JEE Advanced 2024 Paper 2

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