1. Tardigrade
  2. Question
  3. Chemistry
  4. An element in +3 oxidation state has the electronic configuration (Ar) 3d3. Its atomic number is

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Q. An element in +3 oxidation state has the electronic configuration (Ar) $3d^3$. Its atomic number is

The d-and f-Block Elements

Solution:

$M^{3+} : [Ar]^{18} \, 3d^3$
$\therefore $ At. no. of M = 18 + 3 + 3 = 24