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')?

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Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.