👉 Hesium is a chemical element with atomic number 15, which has an atomic mass of approximately 38.46 amu (atomic mass units). It is often referred to as "sodium" in chemistry and has a high melting point and low density.
👉 Hesium is a chemical element with atomic number 15, which has an atomic mass of approximately 38.46 amu (atomic mass units). It is often referred to as "sodium" in chemistry and has a high melting point and low density.
