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NEET UG CHEMISTRY MCQ: SOLID STATE

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The unit cell with dimensions

\alpha = \beta = \gamma = 90^\circ ,a = b \ne c

is

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Correct option: D

Tetragonal

Option D is correct because a unit cell with

\alpha = \beta = \gamma = 90^\circ

and

a = b \ne c

defines a tetragonal crystal system.

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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}^ - }

\;0.181\,\,nm

Wrong match is A molecule contains atoms

A

B

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,