Lesson: Electron Configurations of Main Group Elements

In this lesson, we will learn how to use the periodic table to deduce the electron configurations of main group (s- and p-block) elements.

Worksheet: 25 Questions

Q1:

What is the electronic configuration of the atom?

Q2:

An ion has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶. Which of the following pieces of information would not allow this ion to be precisely identified?

Q3:

Which atom has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d² 5s²?

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