Final answer:
The electron configuration [Ar]3d¹⁰ 4s² represents the element Zinc (Zn), which is the 30th element and a transition metal. Each electron configuration helps identify elements based on their position in the periodic table.
Step-by-step explanation:
The electron configuration [Ar]3d¹⁰ 4s² represents the atom Zinc (Zn). This configuration signifies that the atom has filled 3d orbitals after the [Ar] core and two electrons in the 4s orbital. In the periodic table, Zinc is the 30th element, and it is part of the transition metals.
Using the given electron configurations as reference, each configuration corresponds to various elements, often indicating their position in the periodic table and their valence shell electron configuration. For instance, the configuration [Ar]4s² 3d⁵ corresponds to Manganese (Mn), while [Kr]5s² 4d¹⁰ 5p⁶ is the configuration for the noble gas Krypton (Kr).