Try 3 free problems on configurations, sublevels, orbital rules, and valence electrons. Want more reps? Premium opens the full 171-problem bank in sets of 3, 9, or 18.
Work these 3 to find out whether the electron configuration filling patterns are clicking — or whether they need more deliberate, careful repetitions before they will.
#4Valence Electrons
How many valence electrons does a nitrogen atom (N, Z = 7) have? Write the full configuration to verify.
#5Hund's Rule
Hund's Rule states that when filling orbitals of equal energy, electrons…
#6Quantum Numbers
Which set of quantum numbers (n, l, ml, ms) is NOT valid for any electron?
Prep for the test — not just the homework
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171 problems across electron configurations, orbital diagrams, and sublevel rules
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High School Chemistry · Unit 04 · Electron Configuration Practice