how many protons does se-2 have
32
34
36
2
Do you mean Se^-2? There is no se atom.
Se, the neutral atom) is atomic number 34; therefore, it has 34 electrons. It must gain two electrons to have a -2 charge. 34+2=??
To determine the number of protons in an atom, you simply need to look at its atomic number on the periodic table. The atomic number of selenium (Se) is 34. Therefore, the number of protons in a selenium atom is 34. Please note that the -2 charge of Se-2 indicates two extra electrons, not protons.
The symbol "Se" represents the chemical element selenium. To determine the number of protons in an atom of an element, you can look at its atomic number, which is usually located above the element symbol on the periodic table.
In the case of selenium (Se), its atomic number is 34. Therefore, an atom of selenium has 34 protons.
So, the correct answer is 34.