The atomic number of Se is 34.
Look it up on the periodic table. It's #34, signifying that it has 34 protons.
34
An atom of selenium has 34 electrons.
34 electrons
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
The element with 34 electrons is selenium. It has an atomic number of 34, which corresponds to the number of electrons in a neutral selenium atom.
34 protons 34 electrons 46 neutrons
Se
This atom is Krypton (Kr). It has 34 protons, 34 electrons, and 41 neutrons.
Selenium, with the chemical symbol Se, is the chemical element with the atomic number 34.
The isotope, Se-79, has 45 neutrons (79 - 34 = 45)