atomic number 39

ریشه

The term 'atomic number' originated from the combination of 'atomic' (from Greek 'atomos' meaning 'indivisible') and 'number' (from Latin 'numerus').

مثال

• Yttrium has an atomic number of 39.
• The atomic number 39 indicates the number of protons in a yttrium atom.
• The atomic number 39 is used to identify yttrium in the periodic table.