Atoms and Elements

The atomicity of the given molecule is

• monoatomic

• Diatomic

• Triatomic

• Tetratomic

The relative molecular mass of the given molecule is

• 44

• 28

• 12

• 16

What is this?

• Atom

• Molecule

• Molecule of an element

• Molecule of a compound

What is this?

• Atom

• Molecule

• Molecule of an element

• Molecule of a compound

Molecules are the smallest particles of a substance that has dependent existence.

• True

• False

Which one of the following is taken as the standard atom.

• Carbon

• Hydrogen

• Oxygen

• Sodium

The relative atomic mass has a definite unit.

• True

• False

Protons have a

• Positive charge

• Negative charge

• Neutral charge

• None of the above

Nucleus contains

• Protons and electrons

• Protons and neutrons

• Electrons and neutrons

• Protons, electrons and neutrons

.......................... orbit around the shells.

• Protons

• Electrons

• Neutrons

• All of the above