NEET UG CHEMISTRY MCQ: SOLID STATE

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The percentages of void space for simple cubic, body centered cubic and hexagonal close packed arrangement respectively are

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Correct option: A

48,32,26

Option A (48,32,26) is correct because the packing efficiencies for simple cubic, body-centered cubic, and hexagonal close-packed arrangements are 52%, 68%, and 74% respectively, leading to void spaces of 48%, 32%, and 26%.

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Schottky defect in crystals is observed when Calculate the ionic radius of a

\mathrm{C}{\mathrm{s}^ + }

ion, assuming that the cell edge length for CsCl is 0.4123 nm and that the ionic radius of a

\mathrm{C}{\mathrm{I}^ - }

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\;0.181\,\,nm

Wrong match is A molecule contains atoms

A

and

B

such that

A

occurs at the corners of the cube and

Y

at the face centres. The formula of the molecule is Which species is diamagnetic ? The arrangement ABCABC……is referred to as,