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JEE Main202427 Jan 2024Evening ShiftChemistryd and f Block ElementsActual

Choose the correct option having all the elements with d 10 electronic configuration from the following:

Options

  1. ACo 27 , Ni 28 , Fe 26 , Cr 24
  2. BCu 29 , Zn 30 , Cd 48 , Ag 47
  3. CPd 46 , Ni 28 , Fe 26 , Cr 24
  4. DNi 28 , Cr 24 , Fe 26 , Cu 29

Correct answer

B. Cu 29 , Zn 30 , Cd 48 , Ag 47

Step-by-step solution

Electronic Configuration is the distribution of electrons in the various available orbitals of an atom of an element. The mentioned elements are present in d-block. [ Cr ] = [ Ar ] 4 s 1 3 d 5 [ Cd ] = [ Kr ] 5 s 2 4 d 10 [ Cu ] = [ Ar ] 4 s 1 3 d 10 [ Ag ] = [ Kr ] 5 s 1 4 d 10 [ Zn ] = [ Ar ] 4 s 2 3 d 10 Hence, the answer is B.

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