The color of an aqueous [Ni(H2O)6]2 solution is green, [Cu(H2O)6]2 solution is blue, [V(H2O)6]2 solution is violet, [Co(H2O)6]2 solution is red, and [Fe(H2O)6]3 solution is yellow. Which compound has the largest crystal field splitting

What overall charge must all compounds have

What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.