Question

WHAT IS MOLECULAR FORMULA , MOLECULAR MASS , ATOMIC NUMBER AND ATOMIC MASS

Answer 1

Answer:

• A molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule.
• Molecular mass is a number equal to the sum of the atomic masses of the atoms in a molecule.
• Atomic number is the number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table.
• Atomic mass is the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.

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Answer 2

Answer:

Molecular formula : the exact number of different types of atoms present in a molecule of a compound.

Molecular mass: it is the aum of atomic masses if the elements present in a molecule.

Atomic mass: a mass exactly equal to one twelfth of the mass of one carbon 12 atom.