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Europium atom & ion lab

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

UndergraduateLive

Scientific learning path

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

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 energy547.1 kJ mol⁻¹
Covalent radius198 pm
Electronegativity1.2 Pauling

Description of this simulation

Europium is neutral here: 63 protons are balanced by 63 electrons across shells 2, 8, 18, 25, 8, 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?

Eu

Europium

Z = 63
Protons
63
Electrons
63
Shells
2 · 8 · 18 · 25 · 8 · 2
Configuration
[Xe] 4f7 6s2
Common oxidation states
2, 3
Phase near room conditions
solid

What this model shows — and what it simplifies

Educational Model

The nuclear charge stays fixed at 63 protons, which is what defines Europium.

Where do we see this in real life?

The electron count and measured properties of Europium 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
Undergraduate
Reviewer
Not publicly assigned

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