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QAIPMT-2009-Ch-2120: NEET 2009 Chemistry - Class 12 AIPMT-2009-Ch-2120 Solution: Amongst the elements with following electronic configurations…
Amongst the elements with following electronic configurations which one of them may have the highest ionisation energy? Ne Ar Ne Ne
Multiple Choice Options
- A 3d 5 4s 1
- B 3d 5 4s 2
- C 3d 2 4s 2
- D 3d 3 4s 2
Step-by-Step Verified Solution
All the given elements are d-block elements. For
d-block element, it can lose its electrons from 3d and
4s subshell completely. Thus, the element which has
higher number of electrons in 3d and 4s subshells
exhibits largest number of oxidation states. Among
the given options, 3d 5
, 4s 2
has maximum number
of electrons that is, 5 + 2 = 7. Hence, it has largest
number of oxidation states.