Solve for the following problems. Write the given and solution.

Question

6. Write the expanded electron configuration of Astatine then determine the principal, azimuthal, magnetic, and spin quantum numbers.

7. Write the expanded electron configuration of Nihonium then determine the principal, azimuthal, magnetic, and spin quantum numbers.

Answer 1

6.) Astatine (At), atomic number = 85, so it has 85 protons and 85 electrons. It is a "p block" element in period 6, group 17, so it will have 7 valence electrons in the 6p sublevel and the expanded electron configuration is...

1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁵.

principal (n) = 6

azimuthal (l) = 1

magnetic (ml) = -1, 0, 1

spin (s) = +1/2, -1/2

7.) Nihonium (Nh), atomic number = 113, so it has 113 protons and 113 electrons. It is a "p block" element in period 7 and group 13, so it will have 3 valence electrons in the 7 p sublevel, and the predicted expanded electron configuration would be ...

1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁴ 6s² 6p⁶ 6d¹⁰ 7s² 7p¹

principal (n) = 7

azimuthal (l) = 1

magnetic (ml) = -1, 0, +1

spin (s) = +1/2, -1/2