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He2 exists only in discharge tubes because it is an excited state of the helium atom that is created in the high-energy environment of discharge tubes. When electrical energy is passed through the tube, helium atoms are ionized and excited to create He2 molecules, which are unstable and quickly dissociate back into individual helium atoms.

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Q: Why he2 exists only in discharge tubes?
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Related questions

What is an example of an atom that only exists in its molecular form?

A molecule of helium (He) is an example of an atom that exists only in its molecular form, as helium naturally occurs as a diatomic molecule (He2).


Is HE2 a van der waals?

No, HE2 is not a van der Waals molecule as Helium typically exists as a monatomic gas and does not readily form stable compounds or molecules with other elements.


Is He2 joined by a double covalent bond?

No, He2 does not form a stable molecule with a double covalent bond. Helium is a noble gas with a full valence shell, so it prefers not to form chemical bonds with other atoms.


Does helium exist as he2?

No, helium exists as He, with a single electron in its outer shell. The H2 molecule refers to two hydrogen atoms bonded together.


Why can't He2 exist?

He2 cannot exist because helium is a noble gas with a stable electron configuration, making it unlikely to form chemical bonds with other atoms. Additionally, the bond strength between two helium atoms is not strong enough to overcome the repulsion between their positively charged nuclei, preventing the formation of a stable He2 molecule.


Does alpha rays contains only a positive charge of atom?

Alpha rays are helium ions, He2+.


What is the bond order for He2?

The bond order for He2 is 0. Since helium has a stable electron configuration, it does not form stable bonds with another helium atom.


Is helium a element or molicles?

Helium is an element. It is a chemical element with the symbol He and atomic number 2. Helium exists as individual helium atoms, not molecules.


He2 ping2 mean in Chinese?

peace


What does he mean in Chinese?

The Chinese character 和(he2) means "and."


What diatomic molecules are joining by a double covalent bond o2 cl2 n2 he2?

Oxygen (O2), Nitrogen (N2), and Chlorine (Cl2) form diatomic molecules joined by a double covalent bond. Helium (He) typically exists as a monatomic gas and does not form diatomic molecules.


What is helium plus helium?

When two helium atoms combine, they form a molecule of helium gas (He2), which is also known as a dihelium molecule. This molecule is quite rare and unstable under normal conditions, as helium typically exists as a monoatomic gas.