An ion having a 4+ charge and a mass of 49.9 amu has 2 electrons with principal quantum number n = 1, 8 electrons with n = 2, and 10 electrons with n = 3. Supply as many of the properties for the ion as possible from the information given. (Hint: In forming ions, the 4s electrons are lost before the 3d electrons.)
(a) What is the atomic number?
(b) What is the total number of s electrons?
(c) What is the total number of p electrons?
(d) What is the total number of d electrons?
(e) What is the number of neutrons in the nucleus?
(f) What is the ground-state electron configuration of the neutral atom?
HEre's what I tried. For (a), I added up all of the electrons they give, and the sum is 20. If there is a 4+ charge, then there must be 24 protons, so is 24 the answer?
For (b), if there are 2 electrons with principal quantum number n = 1, then there's only 1 s orbital, but how about the number of electrons? There is also what I had trouble with (b), (c), (d), (e)... (f), I don't really understand what it's asking.