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Hydrogen has 1 proton and 1 electron, helium has 2 protons, 2 neutrons and 2 electrons.
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∙ 15y ago
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∙ 11y agoDue to stable electronic configuration in helium (it has completely filled s orbital)
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∙ 14y agoBecause the helium has two protons instead of just one, so it attracts more strongly the electrons.
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∙ 11y agoBecause helium has completely filled valence orbitals; hydrogen does not.
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∙ 10y agobecause it has completely filled shells / orbitals.
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∙ 14y agoThe charge on the nucleus of helium is greater, so the attractive force between the nucleus and the electrons is greater.
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How is helium atom different from a hydrogen atom?
Helium has a nuclear charge of +2 and 2 electrons in a 1s orbital. Hydrogen has a nuclear charge of +1 and just one electron in a 1s orbital. The extra charge on the nuclees means that the electrons in He are more tightly bound than in hydrogen thuis reflected in the ionization energy of 2372 kJ/mol for He and about 1312 kJ/mol for hydrogen. For helium t the "outer shell" is full, a "stable " configuration.
What has more mass hydrogen or helium?
Helium has more mass than hydrogen.
Is a helium atom larger than a neon atom?
helium as it contains 2 protons, while hydrogen only contains 1. Additionally, the orbit of the 2 electrons in a neutral helium atom would also be larger than the orbit of the single electron in hydrogen.
Which is the most stable out of the two Oxygen or Helium?
Helium is more stable, because it has completely filled valence orbitals.
Is hydride ion more stable or less stable than H-atom?
hydried is more stable than H-atom
Why helium exist in the form of he not he2?
he2 is a fatty. He atom is a inert gas. so it can not react with any other atom or molecules to form any compounds.so He2 can't exist. ANOTHER ANSWER: Helium atom has only one shell i-e K-shell which can accommodate a maximum of two electrons which it already has. therefore Helium atom does not need any more electrons to become stable as it is already stable by duplet rule. Thus helium atom does not combine with another helium atom and hence exists as He and not He2.
How is helium atom different from a hydrogen atom?
Helium has a nuclear charge of +2 and 2 electrons in a 1s orbital. Hydrogen has a nuclear charge of +1 and just one electron in a 1s orbital. The extra charge on the nuclees means that the electrons in He are more tightly bound than in hydrogen thuis reflected in the ionization energy of 2372 kJ/mol for He and about 1312 kJ/mol for hydrogen. For helium t the "outer shell" is full, a "stable " configuration.
Why is Helium gas used in gas balloons instead of hydrogen gas?
Hydrogen is highly flammable and can easily explode. Helium is a more stable gas.
Is a hydrogen atom different from a helium atom?
Helium has a nuclear charge of +2 and 2 electrons in a 1s orbital. Hydrogen has a nuclear charge of +1 and just one electron in a 1s orbital. The extra charge on the nuclees means that the electrons in He are more tightly bound than in hydrogen thuis reflected in the ionization energy of 2372 kJ/mol for He and about 1312 kJ/mol for hydrogen. For helium t the "outer shell" is full, a "stable " configuration.
What does a core of a star that has been stable for 1 million years have more of then are core that has been stable for 10 million years?
That would be Hydrogen. The star is converting Hydrogen to Helium over time, therefore the older the star is, the more Helium it contains.
How is a molecule differ from an atom?
Atoms make up stable molecules. An atom is a single atom of an element. For example an atom of Helium(He) A molecule is two or more atoms bonded together. So hydrogen in its natural state of H2 is a molecule containing two hydrogen atoms. Another example is H2O which contains to atoms of hydrogen and one atom of oxygen.
How is a hydrogen atom different from a hydrogen atom?
Helium has a nuclear charge of +2 and 2 electrons in a 1s orbital. Hydrogen has a nuclear charge of +1 and just one electron in a 1s orbital. The extra charge on the nuclees means that the electrons in He are more tightly bound than in hydrogen thuis reflected in the ionization energy of 2372 kJ/mol for He and about 1312 kJ/mol for hydrogen. For helium t the "outer shell" is full, a "stable " configuration.
What has more mass hydrogen or helium?
Helium has more mass than hydrogen.
What is a stable octet mean?
a stable octet is also known as a full outer shell. it occurs when electrons are added or removed from an atom so the outtermost shell contains its maximum amount, funnily enough Helium is included because is has a full outer shell as opposed to the direct meaning of a full octet. the term full octet refers to the outtermost shell being complete, however a direct definition means the outtermost shell containing EIGHT electrons, which simply isn't possible for something like Helium or Hydrogen. in which case, the full octet of either Helium or Hydrogen is two electrons- this would give Helium no charge at all, but would give Hydrogen a -1 charge, in a diatomic molecule two Hydrogen atoms would share their electrons between them: H=H <--Hydrogen / Helium --> He (would not donate or adopt electrons) more interstingly is the FORMS of Hydrogen. there are three: Hydrogen, deuterium and tritium.
Hydrogen gas exist at as h2 rather than h why this so?
Elemental Hydrogen is a diatomic element. At STP (standard temperature and pressure) the stable form of the element is for two atoms to be bonded together. In Hydrogen's case, each atom of Hydrogen brings one electron. These two electrons are shared, forming a covalent bond. This sharing of each of the atom's electrons is a more stable state than that of having only a single electron. Stable states are thermodynamically preferable. Electrons travel around atoms in orbitals. Each orbital has two electrons. For Hydrogen, having the 1s orbital filled with it's original electron and the electron shared from the other atom is more stable. In atoms above Helium, the octet rule prevails.
Which is more stable He - 4 or He - 6?
Helium 4 is very stable. Helium 6 is unstable.
Does the sun contain more hydrogen or helium?
hydrogen.
