Helium has completely filled orbitals and is stable whereas hydrogen has one valence electron and is reactive.
Hydrogen gas at standard temperature and pressure exists as diatomic molecules, and much of the chemical potential energy of atomic hydrogen has been evolved as heat along with forming the diatomic molecules.
dont know what kind of a comparision you are looking for but simply: Hydrogen has an atomic weight of 1.008 and sodium has an atomic weight of 22.99. the symbols are H for hydrogen and Na for sodium
Hydrogen is an element. Its atomic number is one. It has one proton in the nucleus, and one electron in the first orbital. It has no neutrons.
Hydrogen is a non metal element. Atomic mass of it is 1.0079.
The same number of electron shells,thus similar atomic structure.
more reactive
nascent hydrogen is much more reactive than ordinary hydrogen because it is produced in situ,itmeans that as it is produced it is consumed in another reaction. It is unstable that is why much more reactive than atomic hydrogen.
nascent hydrogen is much more reactive than ordinary hydrogen because it is produced in situ,itmeans that as it is produced it is consumed in another reaction. It is unstable that is why much more reactive than atomic hydrogen.
NASCENT hydrogen
Hydrogen is an element because it is a pure substance with a unique atomic structure.
Hydrogen is an element because it is a pure substance with a unique atomic structure.
Hydrogen gas at standard temperature and pressure exists as diatomic molecules, and much of the chemical potential energy of atomic hydrogen has been evolved as heat along with forming the diatomic molecules.
It is the only element that can survive without electrons.
The hydrogen-1 isotope is the only known radioactively stable isotope with no neutrons.
H for hydrogen is the simplest atom : one proton and one electron.
Heavy water is water whose atomic structure consists of oxygen and heavy hydrogen. Heavy hydrogen, or deuterium, is hydrogen with neutrons in its nuclei.
It was only accurate when describing the hydrogen atom.