Question

What atom matches this electron configuration? 1s2 2s2 2p6 3s2?

Answer 1

adding the exponents together will give you 12. the electrons equal the protons, so look on your periodic table and find the atomic number 12. this element represents Mg, which is magnesium.

i hope i helped! :))

Answer 2

The electron configuration 1s2 2s2 2p6 3s2 represent the element magnesium (Mg).

What is an electron?

An electron is a subatomic particle, contains an electric charge which is  negative charge one elementary charge.

The first two electrons are placed in the 1s orbital.

The next 2 electrons will go in the 2s orbital.

The next six electrons will go in the 2p orbital.

Then, the six electrons goes in the 2p orbital, and then the remaining two electrons in the 3s.

Thus, the electronic configuration  1s2 2s2 2p6 3s2 is of magnesium.

Learn more about electron, here:

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