Therefore, an element in a neutral state will have the same number of protons and electrons. Answer Save. Wiki User Answered . O 17 protons, 16 electrons, 18 neutrons O 16 protons, 17 electron… 7 electrons, 7 protons, and 7 neutrons. How many protons, neutrons and electrons does Neon have? Anonymous. Number of element = number of protons and electrons in ground state. 0. Fe-57 contains 57 - 26 = 31 neutrons … Thanks in advance. Both the electron and the proton however have the same charging magnitude. The remaining 1 percent is mostly Carbon-13, the other stable isotope of carbon, which has seven neutrons. 10 atomic number. It has only 1 proton, 1 electron, and 0 neutrons. Also, usually one form is much more abundant than the other, with helium 99.999% is in the 2 neutron form. How many protons neutrons and electrons does ca2+ have? I'm doing biology homework and I can't figure it out. it is on the periodic table but i dont know how many protons neutrons and electrons it has. Answer to: How many neutrons, protons, and electrons does Zn have? Ne has 10 protons, 10 -12 neutrons and 10 electrons… How Many Valence Electrons Does Selenium (Se) Have?||Number of Valence Electrons in Selenium (Se) Now we are going to know how many valence electrons selenium have in just 5 steps. the top left corner has a number (10), that's the atomic number (which is the protons/neutrons, they're the same) on the bottom, 20.1, is the atomic mass. At the touch of a button, you can find out how many protons neutrons and electrons does lithium have. how many protons neutrons and electrons does neon have? Answer Save. For the Student Use the periodic table and the names of the elements given below to figure out how many protons, neutrons and electrons they have. Protons 11 Neutrons 12 Electrons 11 The subatomic particles (protons, neutrons and electrons) can be determined using some basic information from the periodic table. atomic …