Profil
A rejoint le : 15 sept. 2021
À propos
Oxygen is a chemical element having the symbol O with atomic number 8. It is known as a member of the chalcogen group in the periodic table.
Endru Smith
Plus d'actions
Oxygen is a chemical element having the symbol O with atomic number 8. It is known as a member of the chalcogen group in the periodic table.