Order given complexes by spin-only magnetic moment or unpaired electrons

1. A.
   (ii) $>$ (i) $>$ (iii) $>$ (iv)
2. B.
   (iii) $>$ (iv) $>$ (ii) $>$ (i)
3. C.
   (ii) $>$ (iii) $>$ (i) $>$ (iv)
4. D.
   (i) $>$ (iii) $>$ (iv) $>$ (ii)

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1. A.
   A $<$ B $<$ D $<$ C
2. B.
   B $<$ D $<$ C $<$ A
3. C.
   A $<$ C $<$ D $<$ B
4. D.
   B $<$ D $<$ A $<$ C

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1. A.
   $\left\lbrack {FeF}_{6} \right\rbrack^{3 -} > \left\lbrack Co\left( C_{2}O_{4} \right)_{3} \right\rbrack^{3 -} > \left\lbrack {CoF}_{6} \right\rbrack^{3 -}$
2. B.
   $\left\lbrack {FeF}_{6} \right\rbrack^{3 -} > \left\lbrack {CoF}_{6} \right\rbrack^{3 -} > \left\lbrack Co\left( C_{2}O_{4} \right)_{3} \right\rbrack^{3 -}$
3. C.
   $\left\lbrack Co\left( C_{2}O_{4} \right)_{3} \right\rbrack^{3 -} > \left\lbrack {CoF}_{6} \right\rbrack^{3 -} > \left\lbrack {FeF}_{6} \right\rbrack^{3 -}$
4. D.
   $\left\lbrack {CoF}_{6} \right\rbrack^{3 -} > \left\lbrack {FeF}_{6} \right\rbrack^{3 -} > \left\lbrack Co\left( C_{2}O_{4} \right)_{3} \right\rbrack^{3 -}$

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1. A.
   $\left\lbrack Fe(CN)_{6} \right\rbrack^{3 -} < \left\lbrack {CoF}_{6} \right\rbrack^{3 -} < \left\lbrack {MnBr}_{4} \right\rbrack^{2 -} < \left\lbrack Mn(CN)_{6} \right\rbrack^{3 -}$
2. B.
   $\left\lbrack Fe(CN)_{6} \right\rbrack^{3 -} < \left\lbrack Mn(CN)_{6} \right\rbrack^{3 -} < \left\lbrack {CoF}_{6} \right\rbrack^{3 -}$ $< \left\lbrack {MnBr}_{4} \right\rbrack^{2 -}$
3. C.
   $\left\lbrack {MnBr}_{4} \right\rbrack^{2 -} < \left\lbrack {CoF}_{6} \right\rbrack^{3 -} < \left\lbrack Fe(CN)_{6} \right\rbrack^{3 -}$ $< \left\lbrack Mn(CN)_{6} \right\rbrack^{3 -}$
4. D.
   $\left\lbrack {CoF}_{6} \right\rbrack^{3 -} < \left\lbrack {MnBr}_{4} \right\rbrack^{2 -} < \left\lbrack Fe(CN)_{6} \right\rbrack^{3 -}$ $< \left\lbrack Mn(CN)_{6} \right\rbrack^{3 -}$

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1. A.
   A $<$ E $<$ D $<$ C $<$ B
2. B.
   E $<$ A $<$ D $<$ C $<$ B
3. C.
   E $<$ A $<$ B $<$ D $<$ C
4. D.
   A $<$ E $<$ C $<$ B $<$ D

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1. A.
   $\left\lbrack Zn\left( H_{2}O \right)_{6} \right\rbrack^{2 +}$
2. B.
   $\left\lbrack Co\left( H_{2}O \right)_{6} \right\rbrack^{2 +}$
3. C.
   $\left\lbrack Co(en)_{3} \right\rbrack^{3 +}$
4. D.
   $\left\lbrack Ni\left( H_{2}O \right)_{6} \right\rbrack^{2 +}$

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1. A.
   R $<$ Q $<$ P
2. B.
   $R < P < Q$
3. C.
   Q $<$ R $<$ P
4. D.
   Q $<$ P $<$ R

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1. A.
   $\left\lbrack Co\left( H_{2}O \right)_{6} \right\rbrack^{2 +}$
2. B.
   $\left\lbrack Fe\left( H_{2}O \right)_{6} \right\rbrack^{2 +}$
3. C.
   $\left\lbrack Mn\left( H_{2}O \right)_{6} \right\rbrack^{2 +}$
4. D.
   $\left\lbrack Cr\left( H_{2}O \right)_{6} \right\rbrack^{2 +}$

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1. A.
   $\left\lbrack {FeF}_{6} \right\rbrack^{3 -} > \left\lbrack {CoF}_{6} \right\rbrack^{3 -} > \left\lbrack Ni(CN)_{4} \right\rbrack^{2 -} > \left\lbrack Ni(CO)_{4} \right\rbrack$
2. B.
   $\left\lbrack Ni(CN)_{4} \right\rbrack^{2 -} > \left\lbrack {FeF}_{6} \right\rbrack^{3 -} > \left\lbrack {CoF}_{6} \right\rbrack^{3 -} > \left\lbrack Ni(CO)_{4} \right\rbrack$
3. C.
   $\left\lbrack {CoF}_{6} \right\rbrack^{3 -} > \left\lbrack {FeF}_{6} \right\rbrack^{3 -} > \left\lbrack Ni(CO)_{4} \right\rbrack > \left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}$
4. D.
   $\left\lbrack {FeF}_{6} \right\rbrack^{3 -} > \left\lbrack {CoF}_{6} \right\rbrack^{3 -} > \left\lbrack Ni(CN)_{4} \right\rbrack^{2 -} = \left\lbrack Ni(CO)_{4} \right\rbrack$

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1. A.
   A $=$ B $<$ C $<$ D
2. B.
   A $=$ B $<$ D $<$ C
3. C.
   C $=$ D $<$ B $<$ A
4. D.
   C $<$ B $<$ D $<$ A

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