Chemistry Question Bank

Solid CO₂ is an example of

The property of crystalline solid is not

Diamond is an example of

For tetrahedral coordination the radius ratio r r should be

Which of the following is an example of covalent crystal solid

Which of the following is an example of ionic crystal solid

Which of the following is a molecular crystal

The number of atoms per unit cell in primitive (sc), body-centered (bcc), face-centered (fcc) and end- centered (ecc) unit cell decreases as

In graphite, carbon atoms are joined together due to

Particles of quartz are packed by

Which one of the following forms a molecular solid when solidified?

A metal crystallizes in a face-centered unit cell. Its edge length is 0.410 nm. The radius of the metal is

Crystals can be classified into basic crystal habits equal to

Potassium has a bcc structure with nearest neighbour distance 4.52 Å. Its atomic weight is 39. Its density will be

Amorphous solids are

Amorphous substances show (1) Short and long range order (2) Short range order (3) Long range order (4) Have no sharp M.P.

Crystalline solid is

A crystalline solid

Mostly crystals show good cleavage because their atoms, ions or molecules are

What is the coordination number of sodium in Na₂O

Among solids the highest melting point is established by

The number of atoms in 100 g of an FCC crystal with density d = 10 g cm –3 and cell edge as 200 pm is equal to

An element with atomic mass 100 has a bcc structrue and edge length 400 pm. The density of element is

In NaCl lattice the coordination number of Cl– ion is

If the radius of K⁺ and F– are 133 pm and 136 pm respectively, the distance between K⁺ and F– in KF is