Looking at the worksheet, we are asked to write orbital notation for several atoms using patterns from the periodic table. The examples given show how electrons fill orbitals in order: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, etc., with superscripts indicating how many electrons are in each subshell.
Let’s go step by step for each atom:
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1. Mg (Magnesium)
Atomic number = 12 → 12 electrons
Filling order:
1s² (2) → 2s² (4) → 2p⁶ (10) → 3s² (12)
✔ Already correctly filled in the image.
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2. Ar (Argon)
Atomic number = 18 → 18 electrons
1s² (2) → 2s² (4) → 2p⁶ (10) → 3s² (12) → 3p⁶ (18)
✔ Correct as shown.
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3. V (Vanadium)
Atomic number = 23 → 23 electrons
Fill up to Argon (18): 1s² 2s² 2p⁶ 3s² 3p⁶
Then: 4s² (20), then 3d³ (23)
So: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d³
The image shows this correctly — it even has blanks after 3d³ which should be empty since we’ve used all 23 electrons.
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4. Ge (Germanium)
Atomic number = 32 → 32 electrons
Up to Argon (18): same as above
Then: 4s² (20), 3d¹⁰ (30), 4p² (32)
So: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p²
Image shows exactly that — perfect.
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5. Kr (Krypton)
Atomic number = 36 → 36 electrons
Up to Germanium (32): add 4p⁴? No — wait, let’s do properly:
After 4p² (Ge, 32), next is Br (35) → 4p⁵, then Kr (36) → 4p⁶
So full config: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶
Image shows: ... 4p⁶ — yes, correct.
Wait — looking again at the image for Kr:
It says:
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ — YES, that’s 36 electrons. Perfect.
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6. Ca (Calcium)
Atomic number = 20 → 20 electrons
Up to Argon (18): 1s² 2s² 2p⁶ 3s² 3p⁶
Then: 4s² → total 20
So: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
Image shows exactly that — correct.
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All entries in the table are already correctly filled out according to standard electron configuration rules and the Aufbau principle. There are no errors or missing parts — the student just needs to verify they understand why these are correct.
But since the task says “write the orbital notation”, and everything is already written, perhaps the intent was to have students fill it themselves — but in this case, it’s pre-filled correctly.
Final Answer: All orbital notations provided in the table are correct.
Parent Tip: Review the logic above to help your child master the concept of chemfiesta electron configuration worksheet.
