Home
Class 12
CHEMISTRY
V.B. Theory describes the bonding in ter...

V.B. Theory describes the bonding in terms of hybridised orbitals of central atom/ion. The theory mainly deals with the geometry (i.e. shape, magnetic properties)
Which of the following cyano complex would exhibit the lowest value of paramagnetic behaviour

A

`[Cr(CN)_(6)]^(-3)`

B

`[Co(CN)_(6)]^(-3)`

C

`[Fe(CN)_(6)]^(3-)`

D

`[Mn(CN)_(6)]^(3-)`

Text Solution

Verified by Experts

The correct Answer is:
B
`{:("Complex","unparied electrons"),([Cr(CN)_(6)]^(-3),3),([Co(CN)_(6)]^(-3),0),([Fe(CN)_(6)]^(3-),1),([Mn(CN)_(6)]^(3-),1):}`
Promotional Banner

Topper's Solved these Questions

  • CO-ORDINATION COMPOUNDS

    AAKASH SERIES|Exercise PRACTICE SHEET - 3 ( Match the following questions)|2 Videos

  • CO-ORDINATION COMPOUNDS

    AAKASH SERIES|Exercise PRACTICE SHEET - 3 (Integer answer type Questions)|5 Videos

  • CO-ORDINATION COMPOUNDS

    AAKASH SERIES|Exercise PRACTICE SHEET - 3 ( Linked Comprehension type questions Passage - 1:)|4 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    AAKASH SERIES|Exercise PRACTICE SHEET - 2 (PRACTICE SHEET -2 (INTEGER ANSWER TYPE QUESTIONS))|7 Videos

  • COMPLEX COMPOUNDS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|45 Videos

Similar Questions

Explore conceptually related problems

Which one of the following cyano complexes exhibit the lowest value of paramagnetic behaviour ?

V.B. Theory describes the bonding in terms of hybridised orbitals of central atom/ion. The theory mainly deals with the geometry (i.e. shape, magnetic properties) Which complex has zero magnetic moment (spin only)

V.B. Theory describes the bonding in terms of hybridised orbitals of central atom/ion. The theory mainly deals with the geometry (i.e. shape, magnetic properties) [Cu(NH_(3))_(4)]^(+2) has hydridisation

Complex compounds are molecular compounds which retain their indentities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called coordination compounds because certain groups called ligands are attached to the central metal ion by coordinate or dative bonds. Coordination compounds exhibit isomerism, both structural and stereoisomerism. The struculre, magnetic property, colour and electrical properties of complexes are explained by various theories. The oxidation number, coordination number and magnetic moment in the following complex Na_(3)[Cr(CN)_(6)] is :

Complex compounds are molecular compounds which retain their identities even when dissolved in water. They donot give all the simple ions in solution but instead finish complex ions. The structure, magnetic property, colour and electrical properties of complex are explained by various theories The Ox.No, CN and magnetic moment in the following complex is [Cr(C_(2)O_(4))_(2)(NH_(3))_(2)]^(-)

Complex compounds are molecular compounds which retain their indentities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called coordination compounds because certain groups called ligands are attached to the central metal ion by coordinate or dative bonds. Coordination compounds exhibit isomerism, both structural and stereoisomerism. The struculre, magnetic property, colour and electrical properties of complexes are explained by various theories. which of the following pairs, both the complexes have the same geometry?

Complex compounds are molecular compounds which retain their indentities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called coordination compounds because certain groups called ligands are attached to the central metal ion by coordinate or dative bonds. Coordination compounds exhibit isomerism, both structural and stereoisomerism. The struculre, magnetic property, colour and electrical properties of complexes are explained by various theories. Arrange the following compounds in order of of their molar conductance : i) K[Co(NO_(2))_(4)(NH_(3))_(2)] ii) [Cr(ONO)_(3)(NH_(3))_(3)] iii) [Cr(NO_(2))(NH_(3))_(5)]_(3)[Co(NO_(2))_(6)]_(2) iv) Mg[Cr(NO_(2))_(5)(NH_(3))]

Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired electrons are paramagnetic and paramagnetic character increases as the number of unpaired electrons increases. Magnetic moment of a complex can be determined experimentally and by using formula sqrt(n(n+2)) and we can determine the number of unpaired electrons in it. This information is important in writing electronic structure of complex which in turn also useful in deciding the geometry of complex. The magnetic moment of complexes given below are in the order : {:(Ni(CO)_(4),[Mn(CN)_(6)]),("(I)","(II)"),([Cr(NH_(3))_(6)]^(3+),[CoF_(6)]^(3+)),("(I)","(II)"):}

Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired electrons are paramagnetic and paramagnetic character increases as the number of unpaired electrons increases. Magnetic moment of a complex can be determined experimentally and by using formula sqrt(n(n+2)) and we can determine the number of unpaired electrons in it. This information is important in writing electronic structure of complex which in turn also useful in deciding the geometry of complex. Which of the following are diamagnetic ? 1) K_(4)[Fe(CN)_(6)] 2) K_(3)[Cr(CN)_(6)] 3) K_(3)[Co(CN)_(6)] 4) K_(2)[Ni(CN)_(4)]