Answer: The ground state electron configuration for C2+ is 1s2 2s2.
Explanation: C2+ represents a carbon ion with a +2 charge, indicating that it has lost two electrons compared to a neutral carbon atom.
The electron configuration is determined by removing electrons from the neutral atom’s configuration.
The neutral carbon atom (C) has an electron configuration of 1s2 2s2 2p2. When two electrons are removed to form C2+, the configuration becomes 1s2 2s2.
Significance: Understanding the electron configuration of ions like C²⁺ helps describe their reactivity and their role in chemical reactions. The loss of electrons affects an ion’s behavior in bonding and reactions.