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If the atomic number is 28, how many unpaired electrons are present?

If the atomic number is 28, how many unpaired electrons are present?

اگر جوہری نمبر 28 ہے، تو کتنے غیر جوڑے الیکٹران موجود ہیں؟
Explanation
  • The atomic number 28 corresponds to nickel (Ni) with the electron configuration [Ar] 3d⁸ 4s².
  • In the 3d subshell, 8 electrons are arranged with 2 unpaired electrons due to Hund's rule of maximum multiplicity.