Name:
Date:
Period:
Electron Configuration Assessment
1. The number of valence electrons in an atom with an electron configuration of
1s22s22p63s23p4 is
6
16
4
2
2. The diagram below shows a partial periodic table.
The electron configuration of oxygen is 1s22s22p4. On the periodic table, fluorine is one
space to the right of oxygen. Which of the following electron configurations represents
fluorine?
1s22s22p3
1s22s22p5
1s22s22p63s23p3
1s22s22p63s23p5
3. [Ar]4s1 is the noble gas configuration for which element?
A.
B.
C.
D.
Al
Ar
K
Na
Name:
Date:
Period:
4. A certain element has a ground state electron configuration of
1s22s22p63s23p6. Which letter in the diagram below represents the position of
this element on the periodic table?
A.
B.
C.
D.
X
Y
W
Z
5. Which of the following is the electron configuration for sulfur?
6. Which is the electron configuration of a neutral atom in the ground state with a total of six
valence electrons?
1s22s22p2
1s22s22p4
1s22s22p6
1s22s22p63s23p6
Name:
Date:
Period:
7. An atom in the ground state has 7 valence electrons. Which electron configuration could
represent the outermost principal energy level of this atom?
3s13p6
3s23p5
3s13p43d2
3s23p43d1
8. What is the noble gas configuration for Calcium?
[Ne]4s2
[Ne]3p6
[Ar]4s2
[Ar]4s1
9. The following electron configuration represents which element? 1s22s22p3
A. Lithium
B. Sodium
C. Neon
D. Nitrogen
10. Write the electron configuration for Bromine in noble gas configuration: