3:37   How to find the Number of Protons, Electrons, Neutrons for Lithium (Li) 1:59   How to find Protons & Electrons for the Pb2+ and Pb4+ (Lead II and Lead IV ions) 1:41   How to find Protons & Electrons for the Sr 2+ (Strontium ion) 2:05   How to find Protons & Electrons for the Zn 2+ (Zinc ion) 1:55   Atomic Structure (Bohr Model) for Lithium (Li) 1:45   How to find Protons & Electrons for the Cd 2+ (Cadmium ion) 1:53   How to find Protons & Electrons for the Lithium ion (Li+) 1:55   How to find Protons & Electrons for the K+ (Potassium ion) 1:53   How to find Protons & Electrons for the Sn, Sn2+, and Sn4+ 1:57   How to find Protons & Electrons for Ag+ (Silver ion) 1:41   How to find Protons & Electrons for the Rb (Rubidium ion) 1:45   How to find Protons & Electrons for the Ni, Ni2+, and Ni3+ 1:59   How to find Protons & Electrons for the Ti, Ti2+, and Ti3+ 1:47   How to find Protons & Electrons for the Cr, Cr2+, and Cr3+ 1:53   How to find Protons & Electrons for the Mn, Mn2+, and Mn3+