Chapter 9, Problem 90SAE

Consider a nitrogen atom in the ground state and comment on whether the following statements are true or false.
a. $Z_{an}$ for an electron in a 2s orbital is greater than that for the Is orbital.
b. The $Z_{an}$ for the 2p and 2s orbitals is the same.
c. More energy is required to remove an electron from a 2s orbital than from the 2p orbital.
d. The 2s electron is less shielded than the 2p electron.