How To Find The Number Of Core Electrons? How to find number of core electrons? | Quizlet Expert solutions Question How to find number of core electrons? Solution Verified Create an account to view solutions. When I want to figure out how many valence electrons sodium has, the number of valence electrons would be equal to the number of electrons in the outermost shell, the outermost.

Finding the number of core electrons in an atom is an important step in the study of chemistry. Knowing the number of core electrons can help you understand how atoms interact with each other and can help you make predictions about the behavior of atoms in different compounds. Here is a step-by-step guide on how to find the number of core electrons in an atom.

Step 1: Identify the atomic number of the atom. The atomic number of an atom is the number of protons in its nucleus. Knowing the atomic number will help you determine the number of core electrons.

Step 2: Determine the group number of the atom. The group number is the column number in the periodic table that the atom belongs to. Knowing the group number will help you determine the number of core electrons.

Step 3: Calculate the number of core electrons. The number of core electrons is equal to the atomic number minus the group number. For example, if the atomic number is 8 and the group number is 2, then the number of core electrons is 8-2 = 6.

Step 4: Calculate the number of valence electrons. The number of valence electrons is equal to the group number. For example, if the group number is 2, then the number of valence electrons is 2.

Step 5: Add the number of core electrons and the number of valence electrons. This will give you the total number of electrons in the atom. For example, if the number of core electrons is 6 and the number of valence electrons is 2, then the total number of electrons is 6 + 2 = 8.

By following these steps, you can easily calculate the number of core electrons in an atom. Knowing the number of core electrons can help you understand how atoms interact with each other and can help you make predictions about the behavior of atoms in different compounds.

## CHEMISTRY 101: Valence and core electrons

Learning Objective: Evaluate the number of valence electrons and core electrons from the electron configurations. Topics: core electrons, valence electrons

The number of core electrons equals the difference between the total number of electrons and the number of valence electrons, or 17 – 7. How many core electrons are in Be? The.