Which bonds connect the carbon atoms in a diamond crystal?
valence bond
covalent bond
coordinate bond
ionic bond
Which bond holds together the carbon atoms in the molecular sheets of graphite?
molecular bonds
co ordinate bond
single covalent bonds
metallic bonds
Which of these belong to the crystal of metallic crystal as a whole ?
positive ions
mobile electrons
mobile protons
negative ions
Which crystal contains mobile electrons in the interstices between crystal lattice?
metallic crystal
ionic crystal
atomic crystal
molecular crystal
Metallic crystals lightly conduct
heat
electricity
stress
none of these
What is conducted from one end to the other in metallic crystal?
Heat
Pressure
Electricity
Light
___________ is a planar network solid consisting of molecular sheets.
Diamond
Graphite
Silicon carbide
Sodium chloride
What does the the crystal lattices of metal crystals contain?
positive elements
electrons
_________ is an imaginary line about which if the crystal be rotated, it will present the same appearance more than once during the course of complete revolution.
centre of symmetry
axis of symmetry
plane of symmetry
elements of symmetry
Which crystal is not made up of ions?
covalent network crystals
ion crystal
both a and b
