Chemistry - Electron Configuration for Ions

This video tutorial explains how to write electronic configurations for ions, focusing on the addition or removal of electrons based on the ion's charge. It covers examples of sodium, aluminum, iron, chlorine, and oxygen ions, demonstrating how to adjust electron configurations by adding or removing electrons from the outermost energy level. The tutorial emphasizes the importance of understanding charge effects and energy levels in determining the correct electron configuration for ions.

What is the main factor to consider when determining whether to add or remove electrons in an ion's electronic configuration?

• The type of element

• The number of protons

• The charge of the ion

• The atomic number

When writing the electronic configuration for a sodium ion, which electron is removed?

• The electron from the 1S orbital

• The electron from the 2P orbital

• The electron from the 3S orbital

• The electron from the 2S orbital

How many electrons are removed when aluminum forms a +3 ion?

• Four electrons

• Three electrons

• One electron

• Two electrons

For an iron ion with a +2 charge, from which orbital are the electrons removed?

• 3D orbital

• 4S orbital

• 2S orbital

• 3P orbital

What is the electronic configuration of an iron ion with a +2 charge?

• 1S22S22P63S23P63D6

• 1S22S22P63S23P64S23D6

• 1S22S22P63S23P64S23D4

• 1S22S22P63S23P63D4

When chlorine becomes an ion with a -1 charge, where is the extra electron added?

• 3S orbital

• 2P orbital

• 3P orbital

• 1S orbital

How many electrons are added to the oxygen atom to form an ion with a -2 charge?

• One electron

• Two electrons

• Four electrons

• Three electrons