For Na ion, what is the ratio of the number of ions in the 3p excited state to the number in the ground state at a temperature of 6500 K?

5. (a) Use the hydrogen-like model z2 (in eV) En --13.6 to calculate the total energy of the three electrons of lithium (Li), which has the electron configuration: 1s? 2s'. The three ionization energies for Li(g) are: IE, = 5.392 ev; IE2 = 75.64 eV; IE = 122.5 ev. With the help of Koopman's theorem, what is the total energy of ropulsion between lithium's three electrons (in kJ mol')?

The contour representation zof one of the orbitals for then = 3 shell of a hydrogen atomis shown here. (a) What is thequantum number l for thisorbital? (b) How do we label thisorbital? (c) In which of the followingways would you modifythis sketch if the value of themagnetic quantum number, ml,were to change? (i) It would bedrawn larger, (ii) the number of lobes would change, (iii) thelobes of the orbital would point in a different direction, (iv)there would be no change in the sketch. [Section 6.6]

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