Answer
(a) Magnesium (Mg)
(b) Nickel (Ni)
(c) Palladium (Pd)
(d) Tungsten (W)
Work Step by Step
The identity of an element is given by its atomic number; therefore, we just have to determine them in each case and use a periodic table to get the correct answer.
** The atomic number (Z) is the bottom left number of the symbol.
(a) Z = 12; Magnesium (Mg)
(b) Z = 28; Nickel (Ni)
(c) Z = 46; Palladium (Pd)
(d) Z = 74; Tungsten (W)
