[stev3n]

I need some help on my true or false for online homework..I only have one guess left 

Each individual orbital can hold a maximum of two electrons.
--False, s orbital can hold two, p 6.. etc

The maximum number of electrons in an atomic shell with n = 6 is equal to 72.
--True, max = 2(n^2)

A pair of electrons in an orbital must have opposite spin with respect to each other.
--True, +1/2 and -1/2

The number of electrons in an ion is equal to the atomic number.
--False. Atomic number=# of protons and since and ion has a charge, it won't be the equal to the number of protons.

All of the electrons in an atom will naturally move to the lowest energy (n = 1) level.
--not really sure but my guess was false

Only one electron can be present in each individual orbital.
--again, not really sure but my guess was false.

[macman104]

Your first one is incorrect.  You are confusing individual orbital and subshell designations.

The s subshell can hold 2 electrons because there is only 1 orbital in the s subshell.

However, the p subshell has 6 electrons because remember there are 3 orbitals in the p subshell.  However, you cannot put more than 2 electrons into an orbital.

The last one is false.  You can have at most 2 electrons.