electron configuration worksheet
TRANSCRIPT
Electron configuration worksheet
Using the electron configuration chart given at:
http://periodictablewithnames.net/electronconfigurationchartandworksheet/ solve the following
exercises.
I. Write a ground state electron configuration for each neutral atom listed below. Ground state
means that all of the lowest possible energy levels (up to the proper number of electrons for
the element) are filled.
1. K
2. Pb
3. Sc
4. Ra
5. O
6. Ag
7. Ru
8. Ce
9. I
10. F
2. Write a ground state electron configuration for these ions. Ions can gain or lose electrons so
remember that a positive ion (cation) has less number of electrons than its neutral form
whereas a negative ion (anion) has more electrons than its neutral form.
Example: C4+
is a cation thus has 4 electrons less than its neutral form C0. If C
0 has 6 electrons
and its configuration is 1s2 2s
2 2p
2, then C
4+ should have only two electrons; thus its electron
configuration would be 1s2.
11. O2-
12. Fe3+
13. Br-1
14. Ni2+
15. K+
16. Cu2+
17. F-1
18. Ca+2
3. Choose 3 possible elements or ions that may represent the following electron configurations
19. 1s2 2s
2 2p
6 3s
2 3p
6 4s
2 3d
1
20. 1s2 2s
2 2p
6 3s
2 3p
6 4s
2 3d
10 4p
6
21. 1s2 2s
2 2p
6 3s
2 3p
6 4s
2 3d
10
22. 1s2 2s
2 2p
6 3s
2 3p
6 4s
2 3d
10 4p
6 5s
2
23. 1s2 2s
2 2p
6 3s
2 3p
6 4s
2 3d
10 4p
6 5s
2 4d
4
24. [Ar] 4s1
25. [Ar] 4s2 3d
5
26. [Ne] 3s2
27. [Ne] 3s23p
4
28. [Kr] 5s2 4d
10 5p
2
Find all the information you need about the periodic table at:
http://periodictablewithnames.net