1. On the basis of Rutherford's model of an atom, which sub-atomic particle is present in the nucleus of an atom?
A. proton and electron
C. proton and neutron
B. neutron and electron
D. proton only

2. If the first and second energy levels of an atom are full, then what would be
the total number of electrons in the atom?
A. 6
B. 8 up
C. 10
D. 18

3 Which atomic model is proposed by Schrodinger?
A nuclear model
C. raisin bread model
B. planetary model
D. quantum mechanical model

4. Which electron transition results in the emission of energy?
A. 3p to 3s
C. 2s to 2p
B. 3p to 4p
D. 1s to 2s

5. The symbol "n" in the Bohr theory of atomic structure refers to the
A. energy of electron
B. total energy of the atom
C. orbit in which an electron is found
D. number of electron in the energy level

6. Which of the following sublevels is correctly designated?
A. 1p5 B. 2p6
C. 319
D. 3011​