Good maths skills! We know that the formula for the maximum number of electrons in an orbit is given by $$2 n^2$$. Using $$n=4$$ here gives us $$32$$.
Rule 1 says that electrons occupy as low an $$n$$ as possible. So, if you had two orbits available, you would choose the orbit with the lower $$n$$. That is, always start from the lowest $$n$$ possible.
Hydrogen has 1 electron. What is the $$n$$ corresponding to the orbit Hydrogen's electron is in?
• $$n=1$$
• $$n=2$$
• $$n=3$$
• $$n=4$$