How is the mass of an atom accounted for?

Most of the mass of an atom is concentrated in

Alomost the entire mass of an atom is concentrated in the ________.

According to Rutherford, the mass of the atom is concentrated at ……………..

How are the shells in an atom designated?

How is the stability of atoms and ions determined?

What is the mass in grams of a chlorine atom, Cl?

In a Bohr atom the electron is replaced by a particle of mass 150 times the mass of the electron and the same charge . If a_(0) is the radius of the first Bohr orbit of the orbital atom, then that of the new atom will be

Which one accounts for the mass of any substance?

With increase in number of halogen atoms & atomic mass of halogen atoms density of the compounds

What is atomic mass of an element?