unit 3

Question 1

orbital

Answer 1

3 dimensional region around the nucleus

Question 2

aufbau principle

Answer 2

electrons will occupy the lowest energy orbital available to it

Question 3

Pauli exclusion principle

Answer 3

electrons in the same orbital spin in opposite directions

Question 4

hunds rule

Answer 4

all orbitals in the same sublevel must hold one electron before electrons pair up