Respuesta :

wolf4531

Answer:

(37-17=20).

Explanation:

In a neutral Cl atom, there are 17 Protons and electrons. Subtracting the atomic number from the mass number gives us 20 neutrons (37-17=20).

12701312

Answer:

17 electrons

Explanation:

20 neutrons (17 protons + 20 neutrons = 37 particles in the nucleus).