Which process is used to make lime (calcium oxide) from limestone (calcium carbonate)?

The modern periodic table has groups.

What kind of ion is contained in salts that produce an acidic solution? a positive ion that attracts a proton from water a positive ion that releases a proton to water a negative ion that attracts a proton from water a negative ion that releases a proton to water

As you move from right to left on the periodic table the atomic radius fill in the blank