Repeat for each element in the molecule then sum together all the products to get the total amount of electrons. How to Determine the Number of Excess Electrons on an Object Given its Net Charge in Coulombs. 3 Ways To Calculate Atomic Mass Wikihow Teaching Chemistry Atoms And Molecules For Kids Chemistry Worksheets Step 4 Find the number of valence electrons by counting the total number of electrons present in the outermost shell. . Carbon-14 has two additional neutrons but the same number of protons and elec. It is not the same as the atomic weight. To convert from charge per second to number of electrons we will divide by the fundamental unit of charge and multiply by. Identify the proton number also called atomic number of the element on the periodic table of elements. It resides in a specific orbit of the atom and revolves around the nucleus. This is a chemistry tutorial video that goes through how to find the number o