NEW YORK (Reuters Health) â Long-term treatment of systemic lupus erythematosus (SLE) with hydroxychloroquine, initiated soon after disease onset, is protective against renal damage, according to study findings presented this week at the American College of Rheumatology Annual Scientific Meeting in San Francisco.
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CH4, methane, is a gas, and the bonds are 97% covalent. SO4^2- is the sulfate polyatomic ion. The bonds in sulfate ion are 83% covalent. In Na3PO4 the bonds in the PO4^3- polyatomic ion are 68% covalent and the bonds between O and Na are 80% ionic. Therefore, Na3PO4 will have high ionic character.