mass box a = 10 grams; mass box b = 5 grams; mass box c—made of one a and one b
how many grams of a would be needed to give the same number of particles:
as 7.5 grams of b?
as 2.5 grams?
as 12.5 grams?
as 1 gram?

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

there all right good

explanation:

i believe the answer is a.

idk what the question is about