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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2007
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The d electron configuration of $Cr^{2+}, Mn^{2+}, Fe^{2+}$ and $Ni^{2+}$ are $3d^4$, $3d^5$, $3d^6$ and $3d^8$ respectively. Which one of the following aqua complex will exhibit the minimum paramagnetic behaviour ? <br>(At. No. Cr = 24, Mn= 25, Fe = 26, Ni = 28)


( A ) $[Cr(H_2O)_6]^{2+}$
( B ) $[Ni(H_2O)_6]^{2+}$
( C ) $[Fe(H_2O)_6]^{2+}$
( D ) $[Mn(H_2O)_6]^{2+}$

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