Answer
(a) potassium carbonate
(b) sodium cyanide
(c) lithium bicarbonate
(d) calcium hypochlorite
Work Step by Step
With ionic compound, we name the cation first, using its name as-is. In these problems, we are dealing with polyatomic anions, so we keep the name of the anion as-is.
(a) $K$ stands for potassium. $CO_3$ is carbonate. This compound is potassium carbonate.
(b) $Na$ stands for sodium. $CN$ is cyanide. This compound is sodium cyanide.
(c) $Li$ stands for lithium. $HCO_3$ can either be called hydrogen carbonate or bicarbonate. This compound can be called lithium hydrogen carbonate or lithium bicarbonate.
(d) $Ca$ stands for calcium. $ClO$ is hypochlorite. This compound is calcium hypochlorite.