Exercise 11 | Atoms and Molecules

Determine the number of protons, neutrons and electrons of the following elements:

Se3478 , O+817 , Fe2+2655 , Cl-1735

Se3478 ⇒ 34 protons, 44 neutrons, 34 electrons

O+817 ⇒ 8 protons, 9 neutrons, 7 electrons

Fe2+2655 ⇒ 26 protons, 55 neutrons, 24 electrons

Cl-1735 ⇒ 17 protons, 18 neutrons, 18 electrons