Oxygen valence electrons

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Oxygen is classified as a nonmetal, more specifically, a reactive nonmetal, and has 6 valence electrons. The valence electrons of oxygen can be found by referring to its position (the group in which it lies) on the periodic table, or another method is to use its electron configuration.

Methods

Using periodic table

Get the periodic table having the chemical elements marked on it as mentioned above.

Now mark the location of oxygen on the periodic table.

Next, mark the group number of oxygen on the periodic table.

The valence electrons of each main-group element can be determined by the column in which it is located.

(i.e., all group 1 elements have 1 valence electron, all group 2 elements have 2 valence electrons, skip the transition metals… then, all group 13 elements have 3 valence electrons, all group 14 elements have 4 valence electrons, and so on up to group 18 elements)

Since oxygen is in group 16, it has 6 valence electrons.

Using electron configuration

• First, write electron configuration of oxygen

The electron configuration of oxygen is [He] 2s² 2p⁴.

• Second, find highest energy level in electron configuration

In the above electron configuration, the highest energy level (2) is marked with green color.

• Finally, count electrons of that energy level

The 2^nd energy level contains 2s and 2p subshells. There are 2 electrons in the 2s subshell and 4 electrons in the 2p subshell. So oxygen has a total of 2 + 4 = 6 valence electrons.

Next: Fluorine valence electrons

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Related

• Periodic table

More topics

• Oxygen
• Oxygen Bohr model
• Oxygen orbital diagram
• Oxygen protons neutrons electrons

External links

• https://socratic.org/questions/what-is-the-number-of-valence-electrons-in-oxygen
• https://www.quora.com/How-many-valence-electrons-does-oxygen-have
• https://homework.study.com/explanation/how-many-valence-electrons-does-oxygen-need-to-be-stable.html