Electron Configuration Practice Worksheet
Part 1. For each element, write the (1) orbital diagram and (2) ground state electron configuration. Determine how many valence electrons the element has. Valence
electrons
1) sodium Orbital diagram: ______
E. configuration: ______
2) phosphorous Orbital diagram: ______
E. configuration: ______
3) carbon Orbital diagram: ______
E. configuration: ______
4) calcium Orbital diagram: ______
E. configuration: ______
5) neon Orbital diagram: ______
E. configuration: ______
Part 2. Write the (1) ground state electron configuration, (2) noble gas notation, (3) number of valence electrons, and (4) Lewis dot structure for the following elements.
6) oxygen E. configuration: ______
Noble gas notation: ______
Valence electrons: _____ Lewis Dot Structure: ______
7) magnesium E. configuration: ______
Noble gas notation: ______
Valence electrons: _____ Lewis Dot Structure: ______
8) chlorine E. configuration: ______
Noble gas notation: ______
Valence electrons: _____ Lewis Dot Structure: ______
9) boron E. configuration: ______
Noble gas notation: ______
Valence electrons: _____ Lewis Dot Structure: ______
10) potassium E. configuration: ______
Noble gas notation: ______
Valence electrons: _____ Lewis Dot Structure: ______
11) bromine E. configuration: ______
Noble gas notation: ______
Valence electrons: _____ Lewis Dot Structure: ______
12) lithium E. configuration: ______
Noble gas notation: ______
Valence electrons: _____ Lewis Dot Structure: ______
13) nitrogen E. configuration: ______
Noble gas notation: ______
Valence electrons: _____ Lewis Dot Structure: ______
Part 3. Determine what elements are indicated by the following electron configurations:
14) 1s22s22p63s23p4 ______# valence electrons _____ Dot structure ______
15) 1s22s22p63s23p64s1 ______# valence electrons _____ Dot structure ______
16) 1s22s22p5 ______# valence electrons _____ Dot structure ______
17) [Ne]3s23p1 ______# valence electrons _____ Dot structure ______
18) [Ar]4s23d104p3 ______# valence electrons _____ Dot structure ______
Part 4. Analyze the following electron configurations. Are they correct? If not, correct them.
19) Calcium: 1s22s22p63s23p8 Correct? YES / NO Correction: ______
If incorrect, explain why: ______
20) Aluminum: 1s22s22p63p3 Correct? YES / NO Correction: ______
If incorrect, explain why: ______
21) Silicon: [Kr]3s23p2 Correct? YES / NO Correction: ______
If incorrect, explain why: ______
22) Nitrogen:
Correct? YES / NO Correction: ______
If incorrect, explain why: ______
23) Beryllium:
Correct? YES / NO Correction: ______
If incorrect, explain why: ______
24) Fluorine:
Correct? YES / NO Correction: ______
If incorrect, explain why: ______