Final Exam Study Guide Quiz 4
Sections: Atomic Structure
Electrons
Match the following to the correct letter:
1.
2.
3.
4.
5.
Ion- E
Atomic Number- D
Mass Number- B
Thomson- A
Isotope- C
A. Discovered Electron
B. # of Protons + # of Neutrons
C. 1H, 2H
D. # of protons in an atom
E. Atom with a + or - charge
6. An atom is defined as the smallest part of an element that:
a. contains at least one proton, neutron and electron.
b. retains the chemical identity of the element.
c. can carry an electrical charge.
d. is affected in a cathode ray tube.
7. The electrical charges in an atom are located:
a. only in the nucleus
b. on protons and neutrons
c. on protons and electrons
d. on protons, neutrons and electrons
8. Which of the following statements is one of Dalton’s five postulates:
a. all atoms are identical
b. all atoms of a given element are identical
c. all atoms differ from one another
d. all atoms of a given element have the same mass
9. 14C has more ______________than
a. protons
b. neutrons and electrons
c. neutrons
d. electrons and protons
12C.
For questions 10-13 write the letter of the correct scientist on the answer
sheet.
a.
b.
c.
d.
e.
John Dalton
J.J. Thomson
Ernest Rutherford
Niels Bohr
Millikan
10. He discovered the electron and developed the “plum pudding” model. B
11. His five postulates make up atomic theory. A
12. His gold foil experiment led to his discovery of the nucleus. C
13. He developed the planetary model of the atom, which described the light
spectrum. D
14. What is the shape of a p orbital?
a. sphere
b. dumbbell
c. rectangle
d. flower
15. An atom contains 13 protons, 14 neutrons and 13 electrons. The atomic
number of this element is _______, the mass number of this element is
_________ and the name of the element is ____________.
a. 14, 27, Silicon
b. 13, 27, Aluminum
c. 27, 14, Silicon
d. 13, 14, Aluminum
16. The principle quantum number of the most stable, lowest energy level is
_______and its location is ______________.
a. n=7 , farthest from the nucleus
b. n=0, closest to the nucleus
c. n=3, farthest from the nucleus
d. n=1, closest to the nucleus
17. 1s22s22p63s23p6 is the electron configuration for what element?
a. Argon
b. Neon
c. Carbon
d. Sodium
18. Which of the following is the correct orbital diagram for O?
a.
b
c
d