Question

cd
express your answer in condensed form in order of increasing orbital energy as a string without blank space between orbitals. for example, he2s²2p² should be entered as he2s^22p^2.
4d^105s^2
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Explanation:

Step1: Determine the noble gas core

Cadmium (Cd) has an atomic number of 48. The noble gas core for Cd is [Kr] (krypton has an atomic number of 36).

Step2: Add the remaining electrons

After the [Kr] core, we have 48 - 36 = 12 electrons left. These electrons fill the 4d and 5s orbitals. The 4d orbital can hold 10 electrons and the 5s orbital can hold 2 electrons.

Answer:

[Kr]4d^105s^2