34
34
34 electrons
The atomic number of Selenium is 34.
Selenium (Se) has an atomic number of 34 which means in a balance atom Se will have 34 protons and 34 electrons then Se has a mass of 79 so to get the neutrons we minus the protons from the mass and we get 45 final answer: Neutrons: 45 Protons:34 Electrons: 34
Look it up on the periodic table. It's #34, signifying that it has 34 protons.
Copper is the element.It has 29 protons and 33 neutrons.
t is Selinium, Se the third member of oxygen family
Se
34 protons 34 electrons 46 neutrons
The isotope, Se-79, has 45 neutrons (79 - 34 = 45)
ot tf fs se nt