AhsanX727940 AhsanX727940
  • 03-11-2022
  • Chemistry
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what is the electron configuration of Ni2+? How many valence electrons does this ion have?

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ShahidU413600 ShahidU413600
  • 03-11-2022

Nickel has 28 electrons, its electron configuration is:

[tex]1s^22s^22p^63s^23p^64s^23d^8[/tex]

Ni2+ has lost 2 electrons, which means that the resulting configuration would be:

[tex]1s^22s^22p^63s^23p^64s^23d^6[/tex]

Nevertheless, since 4s electrons are further from the nucleus, they are lost resulting in a more stable ion, then, the actual configuration of Ni2+ is:

[tex]1s^22s^22p^63s^23p^63d^8[/tex]

It means that this ion has 16 valence electrons.

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