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Helium atom & ion lab

Change the electron count of Helium and inspect its charge, shells and reviewed atomic properties.

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Scientific learning path

  1. 01UnderstandLive
  2. 02ExploreLive
  3. 03ExperimentLive
  4. 04ObserveLive
  5. 05ExplainLive
  6. 06ApplyLive
  7. 07TestLive
Explanation mode
He

Core label represents the fixed nuclear charge; individual neutrons are not inferred from standard atomic weight.

Reviewed atomic properties

Unavailable measurements remain explicitly unavailable.

First ionization energy2372.3 kJ mol⁻¹
Covalent radius28 pm
ElectronegativityNot available

Helium does not solidify at 1 atm. It melts at 0.95 K only under about 2.5 MPa.

Description of this simulation

Helium is neutral here: 2 protons are balanced by 2 electrons across shells 2.

Quick test · 3 questions
1. Which statement is evidence from this simulation?
2. How should you test the effect of one control?
3. Why read the model notes?

He

Helium

Z = 2
Protons
2
Electrons
2
Shells
2
Configuration
1s2
Common oxidation states
0
Phase near room conditions
gas

What this model shows — and what it simplifies

Educational Model

The nuclear charge stays fixed at 2 protons, which is what defines Helium.

Where do we see this in real life?

The electron count and measured properties of Helium help determine how it bonds, reacts and is identified in chemical materials.

Explain this result

Scientific review record

Building
Module version
v1 bundled
Published
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Last reviewed
Not yet verified
Academic level
School
Reviewer
Not publicly assigned

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