Question

With the transition metals, the sum of the outer d and s electrons gives what information?

a. Atomic number
b. Atomic mass
c. Oxidation state
d. Electron configuration

Answer 1

The sum of the outer d and s electrons in transition metals provides information about the oxidation state of the metal.

Step-by-step explanation:

For transition metals, the sum of the outer d and s electrons indicates the oxidation state of the metal. Oxidation state, or oxidation number, refers to the charge that an atom would have if the compound was composed of ions. Transition metals are known for having variable oxidation states, often forming cations with 2+ or 3+ charges by initially losing their outermost s electrons before any d electrons. For instance, iron (Fe) can form Fe²⁺ by the loss of two 4s electrons, or Fe³⁺ by further losing one 3d electron.