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JEE Mains · Chemistry · STD 12 - 4. d and f- block elements

\({Gd}^{2+}\)ની ધરા અવસ્થાની ઇલેક્ટ્રોનિક રચનામાં \(4 f\) ઇલેક્ટ્રોનની સંખ્યા \(........\) છે. [પરમામાણ્વીય ક્રમાંક \({Gd}=64\) ]

  1. A \(7\)
  2. B \(6\)
  3. C \(1\)
  4. D \(8\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(7\)

Step-by-step Solution

Detailed explanation

The electronic configuration of \({ }_{64} {Gd}:[{Xe}] 4 {f}^{7} 5 {~d}^{1} 6 {~s}^{2}\) So the electronic configuration of \({ }_{64} {Gd}^{2+}:[{Xe}] 4 {f}^{7} 5 {~d}^{1} 6 {~s}^{0}\) \(i.e.\) the number of \(4 {f}\) electrons in the ground state electronic configuration of…
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