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5. Co-ordination chemistry — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry5. Co-ordination chemistry1 Mark
MCQ
Among the complex ions, $\left[ Co \left( NH _2- CH _2- CH _2- NH _2\right)_2 Cl _2\right]^{+}, \quad\left[ CrCl _2\left( C _2 O _4\right)_2\right]^{3-},\left[ Fe \left( H _2 O \right)_4( OH )_2\right]^{+}$, $\left[ Fe \left( NH _3\right)_2( CN )_4\right]^{-},\left[ Co \left( NH _2- CH _2- CH _2- NH _2\right)_2\left( NH _3\right) Cl \right]^{2+}$ and $\left[ Co \left( NH _3\right)_4\left( H _2 O \right) C1 \right]^{2+}$, the number of complex ion$(s)$ that show$(s)$ cis-trans isomerism is
  • A
    $2$
  • B
    $3$
  • C
    $4$
  • ✓
    $5$
✓

Answer

Correct option: D.
$5$
d
$\left[ Co ( en )_2 Cl _2\right]^{+} \longrightarrow$ will show cis - trans isomerism

$\left[ CrCl _2\left( C _2 O _4\right)_2\right]^{3-} \longrightarrow$ will show cis - trans isomerism

$\left[ Fe \left( H _2 O \right)_4( OH )_2\right]^{+} \longrightarrow$ will show cis - trans isomerism

$\left[ Fe ( CN )_4\left( NH _3\right)_2\right]^{-} \longrightarrow$ will show cis - trans isomerism

$\left[ Co ( en )_2\left( NH _3\right) Cl \right]^{2+} \longrightarrow$ will show cis - trans isomerism

$\left[ Co \left( NH _3\right)_4\left( H _2 O \right) Cl \right]^{2+} \longrightarrow$ willnot show cis - trans isomerism (Although it will show geometrical isomerism)

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