Which quantum number dei nes a shell? Which quan-tum numbers dei ne a subshell?7.52 Which of the four quantum numbers (n, ,, m,, ms) determine (a) the energy of an electron in a hydrogen atom and in a many-electron atom, (b) the size of an orbital, (c) the shape of an orbital, (d) the orientation of an orbital in space?Problems7.53 An electron in a certain atom is in the n 5 2 quantum level. List the possible values of , and m, that it can have.7. 54 An electron in an atom is in the n 5 3 quantum level. List the possible values of , and m, that it can have.7.55 Give the values of the quantum numbers associated with the following orbitals: (a) 2p, (b) 3s, (c) 5d.7. 56 Give the values of the four quantum numbers of an electron in the following orbitals: (a) 3s, (b) 4p, (c) 3d.7.57 Discuss the similarities and differences between a 1s and a 2s orbital.
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