Number+Of+Neutrons+And+Protons+And+Electrons§Ismail


 * Number Of Protons-2**
 * Number Of Neutrons-2**
 * Number Of Electrons-2**
 * Element Term-He**
 * Boiling Point - 268.9 °C**
 * Melting Point - 272.2 (26 atm) °C**