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Which of the following exists as covalen...

Which of the following exists as covalent crystals in the solid state?

A

Phosphorus

B

Iodine

C

Silicon

D

Sulphur

Text Solution

Verified by Experts

The correct Answer is:
C
Silicon has covalent network structure whereas sulphur `(S_8)` , phosphorus `(P_4)` and iodine `(I_2)` are molecular solids.
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PRADEEP-STATES OF MATTER: SOLID MATTER-COMPETITION FOCUS (I.MULTIPLE CHOICE)
  1. Which of the following exists as covalent crystals in the solid state?

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  2. Which of the following statements about amorphous solid is incorrect ?

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  3. How many unit cells are present in a cube - shaped ideal cryst...

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  4. In a face centred cubic lattice, atom A occupies the corner positions ...

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  5. The vacant space in bcc lattice unit cell is :

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  6. If spheres of radius 'r' are arranged in ccp fashion (ABC ABC…) , the ...

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  7. The pyknometric density of sodium chloride crystal is 2.165xx10^(3)kg ...

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  8. The fraction of total volume occupied by the atom present in a simple ...

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  9. The packing efficiency of the two-dimensional square unit cell

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  10. In a solid AB having the NaCl structure, A atom occupies the corners o...

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  11. A compound M(p)X(q) has cubic close packing (ccp) arrangement of X. It...

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  12. Perovskite is mineral containing calcium, oxygen and titanium, in whi...

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  13. Calculate the number of tetrahedral voids in the unit cell of a face-c...

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  14. Structure of a mixed oxide is cubic closed - packed (ccp) .The cubic u...

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  15. If the unit cell of a mineral has cubic close packed (ccp) array of ox...

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  16. The arrangement of X^- ions around A^+ ion in solid AX. If the radius ...

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  17. A metal crystallises in a face centred cubic structure. If the edge le...

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  18. In calcium, fluoride having the florite structures. The coordination n...

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  19. In an ionic compound A^(+)X^(-), the radii of A^(+) and X^(-) ions ar ...

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  20. A solid compound XY has NaCl structure. If the radius of the cation is...

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