ONE, Helium is an element, not a molecule.
Helium and magnesium are both elements because they consist of only one type of atom. In contrast, compounds are made up of two or more different elements chemically bonded together. Helium and magnesium exist in their pure forms as single atoms without being chemically combined with other elements.
Helium is an element made of only one type of atom. Water and sugar are made up of different types of atoms (molecules), while air is a mixture of different gases.
Yes, different elements can have the same number of electrons. Elements with the same number of electrons are known as isoelectronic species. For example, both neon (Ne) and fluorine with a fluoride ion (F-) have 10 electrons.
Period 1 of the periodic table only contains two elements: hydrogen and helium. This makes it the shortest period in the periodic table and the only one that does not contain at least eight elements.
Elements are composed of only one type of atom. For example, the element helium is composed of only helium atoms.
hydrogen (H) and helium (He)
Helium is one element and does not chemically react.
ONE, Helium is an element, not a molecule.
Helium and magnesium are both elements because they consist of only one type of atom. In contrast, compounds are made up of two or more different elements chemically bonded together. Helium and magnesium exist in their pure forms as single atoms without being chemically combined with other elements.
Yes, hydrogen, oxygen, and helium are elements. They are all pure substances made up of only one type of atom. Helium is the second lightest element, hydrogen is the lightest, and oxygen is the third most abundant element in the universe.
Elements made up of only one type of atom are called "pure elements" or "monatomic elements." Each element is defined by the number of protons in its atomic nucleus, giving it distinct chemical and physical properties. Examples include helium, carbon, and gold.
Helium is an element made of only one type of atom. Water and sugar are made up of different types of atoms (molecules), while air is a mixture of different gases.
They both have only ONE, the smallest, electron orbital occupied: H: 1s1 and He: 1s2
Helium is one of the elements of the periodic table. Helium in the shape where people can get in contact with it may have traces of other elements in it depending on the level of purity, but it's still mainly just helium and almost nothing else.
Helium is the second lightest element. Helium has the lowest boiling point among all the elements. It is chemically inert.
Helium has only one type of gas (which is helium itself)