Earth’s core could contain helium from the early solar system. The noble gas tucks into gaps in iron crystals under high pressure and temperature.

More than 75 years after its initial discovery, scientists have created an organometallic molecule containing the transuranium element berkelium. According to a new study, the electronic signature of ...

Primordial helium, or 3 He, on the other hand is not formed on Earth and contains two protons and one neutron. “I have spent many years studying the geological and chemical processes that take ...

If an atom has 2 protons, that’s an atom of the element helium. If it has 7 protons, that’s nitrogen. But the logic of the periodic table also relies upon the number and organisation of electr ...

For example, a helium atom has an atomic mass of 4, but an atomic number (or positive charge) of 2. Since electrons have almost no mass, it seemed that something besides the protons in the nucleus ...

Whereas helium-4 is a common product of the decay of radioactive elements, helium-3 comes almost entirely from the initial cloud of dust and gas that formed the solar system. This primordial ...

Key fact: isotopes are forms of an element that have the same number ... it becomes a negatively-charged ion A helium atom has two electrons in an energy level outside the nucleus.

"Though we carried out the material syntheses under high temperatures, the chemical-sensing measurements were done at extremely cold, or cryogenic, temperatures. This way prevented helium from ...

This diagram shows helium. Is helium a solid ... a specific ratio of two hydrogen atoms to one oxygen atom. Compounds made from non-metal elements that are bonded together usually form molecules.