Foundation
Chemistry Foundation
Evolution of Periodic Table
Question
Which of the following represents the outermost shell’s electronic configuration of d-block elements ?
Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.
Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA
Solution
The d-block elements are transition metals where electrons fill the (n-1)d orbitals. The outermost shell (n) contains s electrons, and sometimes p electrons, but the defining feature is the incomplete (n-1)d subshell.
The general outer electronic configuration is: . The ns orbital can hold 0, 1, or 2 electrons.
Final Answer: (n–1)d1–10ns0-2