Youtor
How to Write the Formula for Manganese III chloride
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=Uec85CMy8Ac
In this video we'll write the correct formula for Manganese (III) chloride, MnCl3. • To write the formula for Manganese (III) chloride we’ll use the Periodic Table and follow some simple rules. • --Keys for Writing Formulas for Compounds with Transition Metals-- • 1. Write the symbol and charge for the transition metal. The charge is the Roman Numeral in parentheses. • 2. Write the symbol and charge for the non-metal. If you have a polyatomic ion, use the Common Ion table to find the formula and charge. • 3. See if the charges are balanced (if they are you’re done!) • 4. Add subscripts (if necessary) so the charge for the entire compound is zero. • 5. Use the crisscross method to check your work. • Notes: • Don’t write the subscript '1'. • If you use the criss-cross method and end up with something like Ca2S2 you'll need to reduce the subscripts to Ca1S1 which we write CaS. • It is possible to have two polyatomic ions such as NH4NO3. In this case find and write both names as found on the Common Ion Table. • For a complete tutorial on naming and formula writing for compounds, like Manganese (III) chloride and more, visit: • http://www.breslyn.org/chemistry/naming • Drawing/writing done in InkScape. Screen capture done with Camtasia Studio 4.0. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo).
#############################
