DIRECTION: Choose the letter of the correct best answer and write it on
number.
C 1. Based on Rutherford's model of an atom, which subatomic particle
an atom?
a. proton and electron
c. proton and neutron
b. neutron and electron
d. proton only number of electron
2. If the first and second energy levels of an atom are full, then what w
a. 6
b. 8
o. 10
a_3. Which atomic model is proposed by Schrodinger?
a. nuclear model
b. planetary model
c. raisin bread model
d. quantum mechanical model
C4. Which electron transition results in the emission of energy?
3p to 3s
c. 2s to 2p
b. 3p to 4p
d. Is to 2s
a.
a. the
a 5. The symbol "n" in the Bohr theory of atomic structure refers to:
energy
of electron
b. the total energy of the atom
the number of electrons in an energy level
d. the orbit in which an electron is found.
C.
6. Which of the following sublevels is correctly designated?
b. lps
b. 3f9
c. 2p
d. 3
7. How many orbitals are in the third principal energy level?
a. 3
b. 6
c. 9
d.
8. Which configuration is possible in an excited state of electron?
a. He: 1s2 b. LH: ldl
c. 11Na: 1s 2s 2p 3d!
d. 10
9. What are the orbitals present in the fifth principal energy level?
a. sorbital
b. sp orbitals
C. S, P, d orbitals
d. s. p. dan
10. For a neutral atom with the electron configuration of 1s 2s 2p 3s!​