Electron Configuration Quiz
Build confidence with electron configurations in about 10 minutes. Get a clear score from 16 fast questions on orbitals, ions, shorthand notation, and excited states.
08:30
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DATA-BASED USER COHORTS
Who Usually Takes This Test?
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
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Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Below is a preview of how scores are typically distributed across each scale.
Electron Configuration Knowledge (ECK)
Electron Configuration Knowledge (ECK)
Average
11.8
Normal range
9.5 — 14.1
min.
0
max.
16
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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SAMPLE QUESTIONS
Example Questions From the Test
- [Ar] 3d⁴ 4s² — two electrons removed from 3d instead
- [Ar] 3d⁵ 4s¹ — one electron removed from each occupied subshell
- [Ar] 3d⁶ — both 4s electrons removed
- [Ar] 3d⁸ — two electrons added to 3d
- 3d¹⁰, showing a completely filled d subshell
- 2p⁷, showing seven electrons where only six can fit
- 1s², showing a completely filled s subshell
- 4f¹⁴, showing a completely filled f subshell
- Group 2, because the 3s subshell contains two electrons
- Group 18, because the third energy level is occupied
- Group 16, because a p subshell can hold six electrons
- Group 13, because the atom has three outer-shell electrons
WHAT THE TEST MEASURES
About This Assessment
Electron Configuration Quiz - Symptoms and Signs
Test your ability to build, interpret, and compare electron configurations in this free, no-sign-up quiz. The 16 questions cover orbital filling, subshell capacities, shorthand notation, valence patterns, ions, excited states, and the principles governing electron arrangements. Alongside essential concepts, you will solve short scenarios involving atoms and common ions. Your final score summarizes your current electron configuration knowledge.
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