2022-2023 SOLID STATE CHEMISTRY

The number of nearest particles which is in direct contact with a particle in a closed packed structure

• Unit Cell

• Void

• Packing efficiency

• Coordination number

Smallest repeating unit of crystal lattice

• Lattice site

• Unit cell

• Crystal lattice

• Lattice point

In a primitive unit cell atoms are present at the

• Corners & Centers of any 2 opposite sides

• Corners only

• Corners and Body Centre

• Corners & Centers of all faces

There are ……….. Bravais lattices corresponding to 7 different Crystal Systems

• 8

• 9

• 14

• 13

The wrong statement about Para magnetism

• They are weakly attracted by a magnetic field

• They are magnetized in a magnetic field in the same direction

• They keep their magnetism in the absence of magnetic field

• It is due to the presence of one or more unpaired electrons

Example for crystalline solid

• Glass

• Quartz

• Plastic

• Rubber

Crystalline solids are

• Isotropic

• Allotropic

• Anisotropic

• Isomorphic

An amorphous solid

• CaCl₂

• NaCl

• Glass

• CsCl

What type of material is this one?

• Crystal

• Amorphous

• Covalent Crystal

• Ionic Crystal

Which of the following is an amorphous solid?

• Copper(Cu)

• Quartz glass (SiO₂)

• Silicon carbide (SiC)

• Sodium Chloride (NaCl)