This is 10th grade Chemistry

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

How do you calculate the mass of a product when the amounts of more than one reactant are given?

How is the electron sea model of metallic bonding different from the band theory? how are they the same? give at least one similarity and one difference between the models