Electron Configuration Practice Worksheet

In the space below, write the unabbreviated electron configurations of the following elements:

1)                 sodium            ________________________________________________

2)         iron                  ________________________________________________

3)            bromine             ________________________________________________

4)         barium             ________________________________________________

5)            neptunium             ________________________________________________

In the space below, write the abbreviated electron configurations of the following elements:

6)         cobalt              ________________________________________________

7)         silver               ________________________________________________

8)            tellurium            ________________________________________________

9)         radium            ________________________________________________

10)            lawrencium            ________________________________________________

Determine what elements are denoted by the following electron configurations:

11)             1s²2s²2p⁶3s²3p⁴  ____________________

12)             1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s¹  ____________________

13)             [Kr] 5s²4d¹⁰5p³  ____________________

14)             [Xe] 6s²4f¹⁴5d⁶  ____________________

15)             [Rn]  7s²5f¹¹  ____________________

Determine which of the following electron configurations are not valid:

16)             1s²2s²2p⁶3s²3p⁶4s²4d¹⁰4p⁵ ____________________

17)             1s²2s²2p⁶3s³3d⁵  ____________________

18)             [Ra] 7s²5f⁸  ____________________

19)             [Kr]  5s²4d¹⁰5p⁵ ____________________