Name: __________________________  Date: _____________

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

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

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

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

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

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

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

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

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

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

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

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

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

14.	How many protons are there in an atom of 	
A)	237	
B)	145	
C)	329	
D)	92	

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

Answer Key

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