What volume will a balloon occupy at 1.0 atm, if the balloon has a volume of 7.5 Lat 3.0 atm? 2.5L 7.5L C22.5 L G C 2.) Which orbital description correctly represents the electron configuration of the ground state of N? 1s: two opposite spin electrons, 2s: two opposite spin elecrons; 2p: one electron in each of the three suborbitals C 1s: two opposite spin electrons, 2s: two opposite spin elecrons: 2p: two opposite spin electrons in one suborbital, one electron in one suborbital, and no electrons in the third suborbital. 1s: one electron, 2s: one electron; 2p: two opposite spin electrons in two suborbitals and one electron in the third suborbital.