Hg2C2
The chemical formula for silicon carbide is SiC
The chemical formula for mercury I phosphate is Hg3(PO4)2. In this compound, one mercury ion (Hg+) combines with two phosphate ions (PO4^3-) to form a neutral ionic compound. The Roman numeral I in the name indicates that mercury is in the +1 oxidation state in this compound.
HgI2 (with the '2' small subscript - ie below the line)
The oxidation value (number) of C atom in carbide (not corbide) is -1, and of Ca always +2. This makes one Ca reacting with two C atoms in forming CaC2.Calcium Carbide is a common but improper name for CaC2.It's proper name is Calcium Acetylide.In Calcium Acetylide there are three covalent bonds joining the Carbon atoms, andthe forth bond of each Carbon go to Calcium forming an ionic bond.Crystal structure :The common crystalline form at room temperature is tetragonal, a distorted rock salt structure with the C22− units lying parallel.(Cf. 'Related links' for ionic picture)
The formula for the nitrate ion is NO3 -1.
The chemical formula for silicon carbide is SiC
The chemical formula is HgNO3.
The chemical formula for mercury I phosphate is Hg3(PO4)2. In this compound, one mercury ion (Hg+) combines with two phosphate ions (PO4^3-) to form a neutral ionic compound. The Roman numeral I in the name indicates that mercury is in the +1 oxidation state in this compound.
The ionic formula for potassium carbide is K2C2. In this compound, potassium has a +1 charge, denoted by K+, and carbide has a -2 charge, denoted by C2-. Two potassium ions are needed to balance the charge of one carbide ion.
HgI2 (with the '2' small subscript - ie below the line)
Mercury I dichromate is Hg2Cr2O7 Mercury II dichromate is HgCr2O7
The formula of mercury(I) hydroxide is Hg2(OH)2.
HgI2
Formula: C4H10
The oxidation value (number) of C atom in carbide (not corbide) is -1, and of Ca always +2. This makes one Ca reacting with two C atoms in forming CaC2.Calcium Carbide is a common but improper name for CaC2.It's proper name is Calcium Acetylide.In Calcium Acetylide there are three covalent bonds joining the Carbon atoms, andthe forth bond of each Carbon go to Calcium forming an ionic bond.Crystal structure :The common crystalline form at room temperature is tetragonal, a distorted rock salt structure with the C22− units lying parallel.(Cf. 'Related links' for ionic picture)
Hg is Mercury's symbol
The formula for the nitrate ion is NO3 -1.