NEETChemistryd and f Block Elements
Which of the following options explains how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?
Options
- Abecause the effective nuclear charge experienced by outer electrons increases.
- Bbecause electrons are added to the same principal energy level.
- Cbecause the atomic radius of the elements increases.
- Dbecause 3d orbitals acquire only one electron in each of the five 3d orbitals [i.e., each d-orbital remains ha
Correct answer
D. because 3d orbitals acquire only one electron in each of the five 3d orbitals [i.e., each d-orbital remains ha
Step-by-step solution
Correct Option is : (D) because 3d orbitals acquire only one electron in each of the five 3d orbitals [i.e., each d-orbital remains half-filleD] and inter electronic repulsion is the least and nuclear charge increases.