Please help with question a-d. Thank you. a.)How many

Please help with question a-d. Thank you.

a.)How many orbitals are there in the 4s subshell?

b.)How many orbitals are there in the 4p subshell?

c.)What is the maximum number of electrons that can be held in a set of 5p orbitals?

d.)What is the maximum number of electrons that can be held in a set of 5d orbitals?