PLEASE HELP
What electron could have quantum numbers n=3, l=0, ml=0, ms=-1/2

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Connect the whole numbers on the periodic table to indicate what they represent?

How many atomic mass units are equal to 1.672×10−24 g of protons?