Subject
6 free books about atoms, free to read online. Chapter 1 of any book is free, no account needed.
Stars and atoms
Sir Arthur Stanley Eddington
The A B C of atoms
Bertrand Russell
The peaceful atom
Bernice Kohn Hunt
The natural and artificial disintegration of the elements An address by Professor Sir Ernest Rutherford
Ernest Rutherford
The quantum postulate and the recent development of atomic theory
Niels Bohr
Atoms and electrons
J. W. N. Sullivan