The index of hydrogen deficiency of niacin is 5. Account for this index of

CM-UY 1004 General Chemistry for Engineers Chemistry Unit: Formulas and Reactions Phase Technical Elements that have single letter abbreviations: Change Name Solid --> Liquid Melting Hydrogen (H), Boron (B), Carbon (C), Nitrogen (N), Liquid --> Solid Freezing Oxygen (O), Phosphorus (P), Sulfur (S), Potassium Liquid --> Gas Evaporation (K), Iodine (I), Tungsten (W), Fluorine (F), Yttrium (Y), Gas --> Liquid Condensation Vanadium (V), Uranium (U) Solid --> Gas Sublimation If parentheses are in a formula, the subscript to the Gas --> Liquid Deposition right tells how many sets of atoms exist in the formula. The total number of atoms is the number within the parenthesis multiplied by the subscript outside the parenthesis. Ex. Pb (NO ) 3 2tains 1 Pb, 2 Ns, and 6 Os Hydrate: a compound that has one or more water molecules bonded to it; the coefficient in front of the H2O shows the number of water molecules Diatomic Elements: Hydrogen (H ), N2trogen (N ), O2ygen (O ), Fl2orine (F ), C2lorine (Cl ), 2 Bromine (Br )2 and Iodine (I 2 |Elemental Phosphorus is P and4Elemental Sulfur is S | 8 Atomic Number: number of protons constant for an element Mass Number: number of protons