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in the first shell there are 2 electrons
there is only one shell because the rule is first shell 2 second shell 8 third shell 8 forth shell whats left unless it is a transition metal then their is always two on the out side unless in is copper or chromium then there is just one and the third shell has the leftovers up to 18 .
sorry i got a little cared away
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∙ 13y ago
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How many shells does a helium have?
Helium has only 1 shell with two electrons.
How many filled electron shells does helium have?
Helium has only 1 shell with two electrons.
How many electrons shells does a helium atom have?
The electron configuration of helium is 1s2; two electrons on the first (and the single) electron shell.
How many rings does a helium atom have?
I assume you mean energy levels/shells. It has 1.
How many inner shell electrons are there in Helium?
Since Helium is a noble gas meaning it is stable, and the fact that it has one shell, it has 2 shells in its inner-most shell.
How many shells does a helium have?
Helium has only 1 shell with two electrons.
How many filled electron shells does helium have?
Helium has only 1 shell with two electrons.
How many electrons shells does a helium atom have?
The electron configuration of helium is 1s2; two electrons on the first (and the single) electron shell.
How many shells does hydrogen have?
All elements in the first period have 1 shell. That's hydrogen and helium.
How many rings does a helium atom have?
I assume you mean energy levels/shells. It has 1.
How many inner shell electrons are there in Helium?
Since Helium is a noble gas meaning it is stable, and the fact that it has one shell, it has 2 shells in its inner-most shell.
How many electrons in the shells of helium?
The first and only filled shell has two electons. The nucleaus has two protons. He-4 also has two neutrons.
What star in the life cycle of stars fuses hydrogen and helium?
A "red giant" star can fuse both hydrogen (in the star's outer shells) and helium (in the core).
What is the aggregate of electrons around the nucleus of an atom?
The number of electrons in a neutral atom will equal the number of protons; the electrons are arranged in concentric shells (at least for atoms heavier than helium; hydrogen and helium both have only one shell, not concentric shells).
How is the noble gas element helium differ from radon?
Helium has 2 electrons and Radon has 86 electrons but both have 8 valence electrons (8 electrons in their outermost shells)
How many extra valence electrons does helium need to become stable?
Helium has 2 valence electrons and has completely filled orbitals / shells and helium is stable.
What element that has full electron shells?
The noble gases, which are helium, neon, argon, krypton, xenon, and radon, have their outermost electron shells full.
