| What to create | Exam |
| Which subject | Chemistry |
| What age group | Year or Grade 9 |
| What topic | Electronic configuration |
| Question types | Mixed |
| Number of questions | 20 |
| Number of answers | 4 |
| Correct answers | Exactly 1 |
| Show correct answers | |
| Use images (descriptions) | |
| Any other preferences |
Test your knowledge on electronic configuration with this quiz! Answer the questions to the best of your ability.
What is the maximum number of electrons that can occupy the first energy level?
Which of the following elements has the electronic configuration of 1s² 2s² 2p⁶ 3s²?
A. Sodium (Na)
B. Magnesium (Mg)
C. Aluminum (Al)
D. Silicon (Si)
What is the name of the principle that states no two electrons in an atom can have the same set of quantum numbers?
If an atom's electronic configuration ends with 4p³, which group does it belong to in the periodic table?
Which of the following represents the correct electron configuration for a neutral oxygen atom?
A. 1s² 2s² 2p²
B. 1s² 2s² 2p⁴
C. 1s² 2s² 2p⁶
D. 1s² 2s² 3p⁶
How many electrons are there in the outermost shell of a neon atom?
What is the electronic configuration of a neutral carbon atom?
A. 1s² 2s² 2p²
B. 1s² 2s² 2p⁶
C. 1s² 2s²
D. 1s² 3s²
Which of the following atoms has the largest atomic number?
A. Helium (He)
B. Lithium (Li)
C. Beryllium (Be)
D. Boron (B)
In terms of electron configuration, which of the following elements is in the same period as sulfur (S)?
The notation for the electron configuration of the element with atomic number 26 (Iron) is:
A. 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
B. 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷
C. 1s² 2s² 2p⁶ 3s² 4s² 3d⁶
D. 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶
What is the principal quantum number for the outermost electrons in a chlorine atom?
Which element has a full outer energy level in its electron configuration?
A. Fluorine (F)
B. Argon (Ar)
C. Phosphorus (P)
D. Magnesium (Mg)
The Aufbau principle helps to determine what aspect of an atom?
Which of the following describes the electronic configuration of potassium (K)?
A. 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
B. 1s² 2s² 2p⁶ 4s¹
C. 1s² 2s² 3s²
D. 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰
How many orbitals are present in the p subshell?
An element has the electronic configuration of 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵. What is the atomic number of this element?
A. 23
B. 24
C. 25
D. 26
What is the electron configuration for the ion Cl⁻?
A. 1s² 2s² 2p⁶ 3s² 3p⁴
B. 1s² 2s² 2p⁶ 3s² 3p⁵
C. 1s² 2s² 2p⁶ 3s² 3p⁶
D. 1s² 2s² 3s² 3p⁶
Which type of orbital is filled after the 3p orbital in the Aufbau sequence?
In the electronic configuration notation, what does "3d" refer to?
A. The third energy level and the s subshell
B. The third energy level and the p subshell
C. The third energy level and the d subshell
D. The fourth energy level and the p subshell
What is the total number of electrons in a neutral atom of iron?
Good luck!