Question

Identify the atoms that correspond to each of the following electron configurations. Then, write the Lewis symbol for the common ion formed from each atom:

a) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
b) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰
c) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶
d) 1s² 2s² 2p⁶ 3s² 3p⁶

Answer 1

The atoms that correspond to the given electron configurations are calcium, zinc, krypton, and argon. The Lewis symbols for the common ions formed from these atoms are Ca²⁺, Zn²⁺, Kr, and Ar-.

Step-by-step explanation:

For the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s², the corresponding atom is calcium. This configuration represents the ground-state electron configuration of a neutral calcium atom. The Lewis symbol for the common ion formed from calcium is Ca²⁺.

For the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰, the corresponding atom is zinc. This configuration represents the ground-state electron configuration of a neutral zinc atom. The Lewis symbol for the common ion formed from zinc is Zn²⁺.

For the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶, the corresponding atom is krypton. This configuration represents the ground-state electron configuration of a neutral krypton atom. The Lewis symbol for the common ion formed from krypton is Kr.

For the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶, the corresponding atom is argon. This configuration represents the ground-state electron configuration of a neutral argon atom. The Lewis symbol for the common ion formed from argon is Ar⁻.