નીચે આપેલા ધાતુ સંકિર્ણ/સંયોજનોને તેમની ફક્ત સ્પીન ચુંબકીય ચાકમાત્રાનાં ચઢતા ક્રમમાં ગોઠવો. બઘા જ ત્રણેય ઉચ્ચ સ્પીન પ્રણાલી વાળા છે તે ધારી લો. (પરમાણુ ક્રમાંક \(Ce= 58, Gd= 64\) અને \(Eu= 63.\)) \((a)\) \(\left( NH _{4}\right)_{2}\left[ Ce \left( NO _{3}\right)_{6}\right]\) \((b)\) \(Gd \left( NO _{3}\right)_{3}\) અને \((c)\) \(Eu \left( NO _{3}\right)_{3}\)

A \((b) < (a) < (c)\)
B \((c) < (a) < (b)\)
C \((a) < (b) < (c)\)
D \((a) < (c) < (b)\)

Verified Solution

Answer & Solution

Correct Answer

(D) \((a) < (c) < (b)\)

Step-by-step Solution

Detailed explanation

\((a)\) \({ }_{58} Ce \rightarrow[ Xe ] 4 f ^{2} 5 d ^{0} 6 s ^{2}\) In complex \(Ce ^{4+} \rightarrow[ Xe ] 4 f ^{0} 5 d ^{0} 6 s ^{0}\) there is no unpaired electron so \(\mu_{ m }=0\) \((b)\) \({ }_{64} Gd ^{3+} \rightarrow[ Xe ] 4 f ^{7} 5 d ^{0} 6 s ^{\circ}\) contain seven…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Explore more questions on app

From JEE Mains

Explore more questions on app