Question

Define:
a) Atomic mass
b) Relative atomic mass
c) Gram molecular mass
d) Mole.
e) Valency of an element

Answer 1

valency is the combing capacity of element

Answer 2

Atomic mass: Atomic mass is the number of protons and neutrons it contains.

Relative atomic mass: The ratio of the average mass of one atom of an element to one twelfth of the mass of an atom of carbon 12.

Gram molecular mass: It is the mass in grams of one mole of a molecular substance.

Mole: A mole is defined as 6.023 x 10^23, be it atoms, molecules, ions or others.

Valency of an element: It is determined by the number of outer or valence electrons.