Name: __________________________  Date: _____________

1.	Choose the correct energy level diagram for oxygen.	
A)		
B)		
C)		
D)		
E)		

2.	The mass number of an atom equals	
A)	the atomic mass of the element	
B)	the atomic number of the element	
C)	the number of protons plus the number of neutrons per atom	
D)	the number of neutrons per atom	

3.	The number of protons in the nucleus of an atom is called its	
A)	isotope number	
B)	atomic number	
C)	valence	
D)	mass number	

4.	A given set of f orbitals consists of ______________ orbital(s).	
A)	3	
B)	5	
C)	7	
D)	1	

5.	How many electrons are present in a fluorine, F, atom?	
A)	11	
B)	18	
C)	10	
D)	9	

6.	The maximum number of electrons allowed in each of the p orbitals is	
A)	4	
B)	18	
C)	2	
D)	8	

7.	The atom with 67 neutrons and 50 protons has a mass number of	
A)	50	
B)	17	
C)	117	
D)	67	

8.	How many protons are there in an atom of 	
A)	238	
B)	146	
C)	330	
D)	92	

9.	An atom that has 54 protons, 54 electrons, and 78 neutrons is	
A)		
B)		
C)		
D)		

10.	The number of neutrons in one atom of  is	
A)	126	
B)	82	
C)	288	
D)	206	

11.	An atom with 15 protons and 16 neutrons is an atom of	
A)	S	
B)	P	
C)	Pd	
D)	Ga	

12.	How many protons, electrons, and neutrons, respectively, does  have?	
A)	13, 10, 14	
B)	13, 13, 27	
C)	13, 13, 13	
D)	13, 13, 14	

13.	A set of d orbitalsl can hold a maximum of	
A)	14 electrons	
B)	32 electrons	
C)	10 electrons	
D)	5 electrons	

14.	The number of unpaired electrons in a nitrogen atom is	
A)	2	
B)	3	
C)	4	
D)	1	

15.	The probability map for an electron is called	
A)	an electron configuration	
B)	an orbital	
C)	an orbit	
D)	a photon	

Answer Key

1.	D	
2.	C	
3.	B	
4.	C	
5.	D	
6.	C	
7.	C	
8.	D	
9.	C	
10.	A	
11.	B	
12.	A	
13.	C	
14.	B	
15.	B