Grade 10 · Science · Chemistry

10th grade Write electron configurations worksheet

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Write electron configurations

Grade 10 Science Worksheet - Building Confidence

NameDate

Circle the best answer, or write your answer on the line.

Using 2n², how many electrons can shell n = 2 hold, Ari?
Using 2n², how many electrons can shell n = 4 hold, Esme?
Read this first
Use this
Written 1s² 2s² 2p⁶ 3s² 3p⁴, or in shorthand [Ne] 3s² 3p⁴.
3.
On the ladder, how many electrons are in sulfur's 3p subshell, Jun?
- 6
- 4
- 2
4.
On the ladder, which subshell fills first, Kira?
Use the picture in question 3.
- 2p
- 3p
- 1s
5.
On the ladder, what does [Ne] stand for in sulfur's shorthand, Luz?
Use the picture in question 3.
- The first 10 electrons
- The last 6 electrons
- A neon atom bonded on the side
6.
Which subshell fills just after 4s, Noah?
- 3d
- 5s
- 4p
7.
Where does potassium's 19th electron go, Pia?
- Into 3p
- Into 3d
- Into 4s
8.
How many electrons can a p subshell hold, Ren?
- 6
- 10
- 2
9.
How many electrons can a d subshell hold, Tala?
- 14
- 6
- 10
10.
What is the most electrons one orbital can hold, Zee?
- 6
- 2
- 8

Write electron configurations. Every version has 10 questions, and the answer key prints on the second page.

I can fill subshells in order (1s 2s 2p 3s 3p 4s 3d 4p) and write a configuration and its noble-gas shorthand.
I can say how many electrons s, p and d subshells and shell n hold (2, 6, 10 and 2n²).
I can name an element's block from its last subshell.
I can use Hund's rule to count unpaired electrons, including in the first transition row.

Standard: HS-PS1-1

subshell: A set of orbitals in a shell: s, p, d or f

orbital: A space that holds up to 2 electrons

configuration: A list of where an atom's electrons sit, like 1s² 2s²

noble-gas shorthand: The previous noble gas in brackets, then the rest

Hund's rule: Electrons fill each orbital singly before any pair up

Your child used 2n. A shell holds 2n² electrons: 8 in shell 2, 18 in shell 3.

Your child left out the core. A neon core already holds 10 electrons, so add them.

Your child paired electrons too early. By Hund's rule, each orbital gets one electron before any pairs up.

What is the most common mistake with write electron configurations?

Your child used 2n. A shell holds 2n² electrons: 8 in shell 2, 18 in shell 3.

Are these 10th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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