Problem: Write electron configurations for the most stable ion formed by each of the elements Al, Ba, Se, and I (when in stable ionic compounds).

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We’re being asked to determine the electron configuration of the most stable ions formed by Al, Ba, Se, and I

To answer this, we need to do the following steps:

Step 1: Determine the number of electrons in the neutral element.

Step 2: Write the ground-state electron configuration of the element.

Step 3: Determine the most stable ion of the element. 

Step 4: Write the electron configuration of the ion.


We need to first find the elements in the periodic table.



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Problem Details

Write electron configurations for the most stable ion formed by each of the elements Al, Ba, Se, and I (when in stable ionic compounds).