What information is given by the noble gas notation Ne 3s2?

Answer 1

The element is magnesium with an atomic number 12.The element belongs to the 3rd period, with two valence electrons in the s orbitals. The element is an example of alkaline earth elements or group 2 elements.

Answer 2

The noble gas notation Ne 3s2 indicates that there are 10 electrons in total, with the first 10 electrons arranged as in the noble gas neon (Ne). The 3s orbital has 2 electrons in it.