Copper oxalate is supposed to be a ribbon-like molecule where each copper 2+ ions are surrounded by four oxygen atoms in a square plan. These four oxygen atoms involve two oxalate anions. A copper II oxalate molecule can be described as an infinite ribbon of alternatively copper (Cu 2+) and oxalate (C2O4 2-) groups.
Each copper 2+ cation is linked by two oxalate groups by weak electrostatic interactions with the four oxygen atoms.
The formula for sodium oxalate is: Na2C2O4
Manganese II oxalate is MnC2O4
Cu2O. Cuprous is Cu+, cupric is Cu2+. Those are old-school names. Copper(I) oxide is a better name.
Copper Oxalate
chromium(II) oxalate
Rapid elimination of water and drying of copper (II) oxalate.
Copper oxalate
The formula for sodium oxalate is: Na2C2O4
Manganese II oxalate is MnC2O4
Cu2O. Cuprous is Cu+, cupric is Cu2+. Those are old-school names. Copper(I) oxide is a better name.
Copper Oxalate
oxalate
chromium(II) oxalate
multiply the mass of copper (63.564) by 1 add that to the mass of carbon (12.011) by 2 and add that to the mass of oxygen (15.999) by 4. 151.58200 divide 63.564 by 151.58200 and you get .419337338 multiply that by 100 and you have 41.93% copper.
copper (I) oxalate Always write formulas with lower case letters.
Copper (II) Bromide
When tin bonds to the oxalate polyatomic ion, it does so as tin(II), so the compound is correctly written as tin(II) oxalate, or stannous oxalate, using the old-fashioned nomenclature. Its chemical formula is SnC2O4. Tin has 2 valence electrons, and the oxalate poly needs 2 electrons, so they combine is a 1:1 ratio.