Electron ConfigurationWhere the electrons actually sit, and why the periodic table…10th GradeElectrons fill the lowest available energy levels first. The order is not simply numerical.1FILL LOWEST ENERGY FIRST1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p…2MIND THE CAPACITIESs holds 2, p holds 6, d holds 10, f holds 14.3USE THE DIAGONAL RULE4s is lower in energy than 3d, so it fills first.4COUNT THE VALENCE ELECTRONSThe outermost shell — this is what determines reactivity.WORKEDOxygen (8): 1s² 2s² 2p⁴Calcium (20): 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²The table's blocks are the sublevels: s-block on the left, p-blockon the right, d-block in the middle.Electron Configurationwww.littleactivity.com

Full preview — nothing is watermarked or held back.

Science · 10th Grade

Electron Configuration

Where the electrons actually sit, and why the periodic table is shaped as it is.

How to use it

Follow the diagonal rule for filling order. 4s fills before 3d.

Free · print-ready PDF · US Letter and A4

Grade
10th Grade
Ages
15–16
Subject
Science
Pages
1

The rest of the 10th Grade wall

49 more posters, all free to print — 11 of them here.

Your Cart (0)

Your cart is empty

Browse our shop to find activities your kids will love