eahilton2 eahilton2

09-10-2018
Chemistry

contestada

Magnesium (Mg) has an atomic number of 12. What is the ground-state electron configuration of magnesium?

A. 1s21p62s22p2
B. 1s21p61d4
C. 1s22s22p63s2
D. 1s22s22p62d2

Respuesta :

mathwhiz109 mathwhiz109

09-10-2018

C. 12222632

You have to follow the Aufbau principle, which states that electrons populate the atomic orbitals situated at the lowest energy first.

The orbitals are:

1

22

333

4444

5555

666

77

Answer Link

vanessaveverett vanessaveverett

10-12-2018

The answer is 1s22s22p63s2

Answer Link

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