Ca(ClO)2 is calcium hypochlorite - I assume this is what you meant to write.
CaClO2 is the chemical formula for calcium chlorite, a compound made up of calcium, chlorine, and oxygen. It is commonly used as a bleaching agent and for water treatment due to its oxidative properties.
The correct name for the compound PCI is phosphorus trichloride.
The correct name for the compound CS2 is carbon disulfide.
The correct name for the compound S3Cl2 is disulfur dichloride.
The correct name of the compound N2O4 is dinitrogen tetroxide.
The correct name for the compound NCl3 is nitrogen trichloride.
The correct name for the compound K2S is potassium sulfide.
The correct compound name for AlF3 is aluminum fluoride.
The correct compound name for BaO is barium oxide.
The correct name for HgO compound is mercury(II) oxide.
The correct name for the compound CoCl3 is cobalt(III) chloride.