Electron revolves around the nucleus in orbits which have
A. variable energy
B. fixed energy
C. infinite energy
D. zero energy
Water that contains H-2 atoms is called
A. heavy water
B. light water
C. pure water
D. chlorinated water
In Rutherford's experiment, α particles were deflected because of
A. electrostatic repulsion between α particles and positively charged part of atom
B. electrostatic attraction between α particles and positively charged part of atom
C. electrostatic repulsion between β particles and positively charged part of atom
D. electrostatic attraction between γ particles and positively charged part of atom
The energy of an electron in orbit is proportional to
A. distance between shells
B. distance from nucleus
C. distance between two nuclei
D. positive charge inside nucleus
According to Rutherford, most of the space occupied by the atom is
A. filled
B. partially filled
C. empty
D. none of above