Complete an orbital diagram for boron.
Drag the appropriate labels to their respective targets. Labels can be used once, more than once, or not at all.
14 1
15
2s
2p
35
3p
The Correct Answer and Explanation is :
Orbital Diagram for Boron (B)
Boron has an atomic number of 5, meaning it has 5 electrons. The electron configuration for boron is:
[
1s^2 2s^2 2p^1
]
This means the electrons are arranged in the following orbitals:
- 1s: 2 electrons (full)
- 2s: 2 electrons (full)
- 2p: 1 electron (partially filled)
Orbital Diagram Representation
The orbital diagram visually represents electron configurations using boxes (or lines) for orbitals and arrows for electrons. Each orbital can hold up to two electrons with opposite spins.
- 1s Orbital → Filled with two electrons (↑↓)
- 2s Orbital → Filled with two electrons (↑↓)
- 2p Orbital → Has one electron (↑)
Using Hund’s rule, which states that electrons will occupy degenerate orbitals singly before pairing, the single electron in the 2p orbital will occupy one of the three available p orbitals.
Labels to be Placed Correctly:
- 1s → Fully filled with 2 electrons (↑↓)
- 2s → Fully filled with 2 electrons (↑↓)
- 2p → One electron (↑)
- 3s and 3p → Not used (since boron only has 5 electrons)
Now, I will generate an image of the correct orbital diagram.

Here is the orbital diagram for boron. It correctly represents the electron configuration with electrons placed in the 1s, 2s, and 2p orbitals following Hund’s rule. Let me know if you need any modifications!