Consider the following illustration of the periodic table. Identify which among the highlighted elements has an anomalous ground-state electron configuration. Justify your answer.
What is the electron configuration for a roentgenium atom?
Palladium (Pd) has an odd electron configuration. Write the complete electron configuration of Pd in order of increasing orbital energy.
Which one of the following statements is/are true?
1. Selenium (Se) has the electron configuration [Ar]4s24d104p3
2. Silver (Ag) has the electron configuration [Kr] 5s14d10
3. Chromium (Cr) has the electron configuration [Ar] 4s13d5
Which is the first element in the periodic table to have a half-filled d subshell in the ground state?
