As in other autoimmune diseases such as lupus and rheumatoid arthritis, the bodyâs natural ability to attack invading viruses and bacteria goes haywire and mistakenly sees healthy body proteins as enemies. Redness, pain, heat and swelling signal that the immune system is on the warpath.
Formal Charge = [# valence electrons on neutral atom] â [(# lone electron pairs) + (Â½ # bonding electrons)] 1  Valence electrons = corresponds to the group number of the periodic table (for representative elements).  Lone Pairs = lone electrons sitting on the atom. Each electron counts as one and so a pair counts as two.
Lithium is a Group IA metal, so its ion will have a +1 charge. Phosphate is a polyatomic ion with a -3 charge. The compound needs three lithium ions to balance the -3 charge of the phosphate, so the formula is Li 3 PO 4. Notice that we didn't do anything with the 4 subscript on the phosphate.