Question

_____metals require a Roman numeral in its name when it combines with a non-metal except for __,__,and__

a) Transition, gold, silver
b) Alkali, hydrogen, helium
c) Alkaline earth, magnesium, calcium
d) Halogen, fluorine, chlorine

Answer 1

Transition metals typically require a Roman numeral in their names when forming compounds with non-metals to indicate their charge; however, silver, zinc, and cadmium do not because they have fixed charges.

Step-by-step explanation:

Transition metals require a Roman numeral in its name when it combines with a non-metal except for silver, zinc, and cadmium. These metals have fixed charges: Ag+, Zn2+, and Cd2+. For transition metals like iron, which can exhibit a charge of either 2+ or 3+, the charge of the metal ion is specified by a Roman numeral in parentheses after the metal's name to distinguish between compounds like FeCl2 as iron(II) chloride and FeCl3 as iron(III) chloride. Silver, zinc, and cadmium do not require a Roman numeral because their charges do not vary.