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MissPhiladelphia
The first two ionization energy of nickel are expressed as:
Ni(g) = Ni^+(g) + e^- Ni^+(g) = Ni^2+(g) + e^- 
IOnization energy os the energy that is neccessary in order to remove one mole of electrons from an atom.
Hope this helps.
okpalawalter8

We have that from the Question "The first two ionization energies of nickel." it can be said that  we have that these are first two first two ionization energies

  • [tex]Ni _g = Ni^+g + e^-[/tex]
  • [tex]Ni^+g = Ni^2+g + e^-[/tex]

From the Question we are told

The first two ionization energies of nickel.

Generally

Ionization energy energy is the energy that is required by an atom to remove one electron from its valent shell .

Therefore

The first two ionization energies of nickel.

  • [tex]Ni _g = Ni^+g + e^-[/tex]
  • [tex]Ni^+g = Ni^2+g + e^-[/tex]

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