Final answer:
The condensed electron configurations for Co2+, N3−, and Ca2+ are [Ar]3d7, [He]2s22p6, and [Ar], respectively.
Step-by-step explanation:
To provide the condensed electron configurations for Co2+, N3−, and Ca2+, we need to first consider the electron configurations of the neutral atoms and then make adjustments based on the charge of each ion.
Cobalt (Co) as a neutral atom has the electron configuration of [Ar]3d74s2. When it loses two electrons to become Co2+, it loses the two 4s electrons, thus the condensed electron configuration becomes [Ar]3d7.
Nitrogen (N) as a neutral atom has the electron configuration of 1s22s22p3. When it gains three electrons to become N3−, it fills the 2p orbitals, leading to the condensed electron configuration of [He]2s22p6.
Calcium (Ca) as a neutral atom has the electron configuration of [Ar]4s2. When it loses two electrons to become Ca2+, it loses the two 4s electrons, resulting in the condensed electron configuration of [Ar].
Therefore, the condensed electron configurations for Co2+, N3−, and Ca2+ are [Ar]3d7, [He]2s22p6, and [Ar], respectively.