The mass of an atom is constituted mainly by

The masss of an atom is consitituted mainly by

Mass of an atom is mainly contributed equal to ______.

Mainly the mass of an atom depends up on the mass of (protons and neutrons, neutrons and electrons)

Analyse the following statements and correct them if there is a mistake. The mass of an atom mainly depends upon the mass of the electrons and neutrons present in it.

Chain isomerism arises due to difference in the arrangement of carbon atoms constituting the chain

The mass of an atom in atomic mass units (called the atom's istopic mass) si numerically close to the atom's

What is nucleus of an atom ? Compare its size with that of the atom. Name its constitutents. How is the number of these constituents determined by the atomic number and mass number of the atom ?

The number of atoms constituting a molecule is known as its……….