Answer
(a) nickel (II) carbonate
(b) sodium cyanide
(c) lithium bicarbonate
(d) calcium hypochlorite
Work Step by Step
(a) nickel (II) carbonate
From the formula, we can see that nickel and carbonate combine in a 1:1 ratio. Therefore, this compound is made with nickel (II) with a valence of 2+ since carbonate has a valence of 2-.
(b) sodium cyanide
"Na" is the elemental symbol for sodium. "CN" is the symbol for cyanide. Sodium has a valence of 1+ whereas cyanide has a valence of 1-.
(c) lithium bicarbonate
"Li" is the elemental symbol for lithium. "HCO$_3$" is the symbol for bicarbonate. Lithium has a valence of 1+ whereas bicarbonate has a valence of 1-.
(d) calcium hypochlorite
"Ca" is the elemental symbol for calcium. "ClO$" is the symbol for hypochlorite. Calcium has a valence of 2+ whereas hypochlorite has a valence of 1-.
