EVERYDAY SCIENCE

Detailed explanation-1: -Dihydrogen is an elemental molecule consisting of two hydrogens joined by a single bond. It has a role as an antioxidant, an electron donor, a fuel, a human metabolite and a member of food packaging gas. It is an elemental hydrogen, a gas molecular entity and an elemental molecule.

Detailed explanation-2: -H2 is a molecule which forms when two hydrogen atoms bond together and become a hydrogen molecule. H2 is also called molecular hydrogen.

Detailed explanation-3: -Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms. There are two main types of chemical bonds that hold atoms together: covalent and ionic/electrovalent bonds.

Detailed explanation-4: -Because the hydrogen atoms are covalently bonded together they form a molecule; so H2 is also referred to as molecular hydrogen. We can also refer to it as dihydrogen. The hydrogen molecule contains two protons and two electrons making it a neutrally-charged molecule.

Detailed explanation-5: -Oxygen is made up of two oxygen atoms that are covalently bonded. Hydrogen (H2)-This is the simplest and the first element in the periodic table. Its two hydrogen atoms are covalently bonded.