If Aufbau rule is not followed in filling of the sub-shells, then the block of which will change in the periodic table?
Correct answer: A. K (19)
- A. K (19)
- B. V (23)
- C. Ti(22)
- D. Ni (28)
Explanation
According to Aufbau's principle the elcetrons should be filled itno the orbitals according to increasing energy levels. In K electrons first fill into 4s then 3d. Not obeying this rule will change K's block from s to d.
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