Home
Class 12
CHEMISTRY
Assertion[Fe(H(2)O)(5)NO]SO(4) is parama...

Assertion`[Fe(H_(2)O)_(5)NO]SO_(4)` is paramagnetic
Reason The Fe in `[Fe(H_(2)O)_(5)NO]SO_(4)` has three unpaired electrons .

Text Solution

Verified by Experts

The correct Answer is:
a
`[Fe(H_(2)O)_(5)NO]SO_(4)`
`NO` has charge equal to `+1` in this complex Therefore, the oxidation number of Fe in the complex becomes `+1`
`Fe = 3d^(6) 4s^(2),Fe^(o+) =3d^(6) 4s^(1)`
Since `H_(2)O` is a weak filed ligand and `No^(o+)` is a strong field ligand so olny `NO^(o+)` cause pairing of `4s` electron Thus only one pairing occurs
Thus the configuration is `3d^(7)` and the complex of unpaired electrons is 3
Promotional Banner

Topper's Solved these Questions

  • COORDINATION COMPOUNDS

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives Integer|2 Videos

  • COORDINATION COMPOUNDS

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives Fill The Blanks|3 Videos

  • COORDINATION COMPOUNDS

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives Single Correct|28 Videos

  • CHEMICAL KINETICS

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives Subjective|23 Videos

  • D AND F BLOCK ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives Subjective|29 Videos

Similar Questions

Explore conceptually related problems

(a). Assertion (A) is true, Reason (R) is also true, Reason (R) is the correct explanation for assertion (A). (b). Assertion (A) is true, Reason (R) is true, Reason (R) is not the correct explanation for Assertion (A). (c). Assertion (A) is true, Reason (R) is false. (d). Assertion (A) is false, Reason (R) is true. Q. Assertion (A): [Fe(H_2O)_5NO]SO_4 paramagnetic. Reason (R): The Fe in [Fe(H_2O)_5NO]SO_4 has three unpaired electrons.

Assertion : [Fe(H_(2)O)_(6)]^(2+) is sp^(3) d^(2) hybridised and paramagnetic complex ion . Reason : [Fe(H_(2)O)_(6)]^(2+) has four unpaired electrons as H_(2)O is a weak field ligand .

Assertion : O_(2) is paramagnetic. Reason : It has one unpaired electron.

The oxidation state of Fe in brown complex [Fe(H_(2)O)_(5)NO]SO_(4) is

What is the oxidation number of Fe in [Fe(H_(2)O)_(5)(NO)]^(2+) ion?

Assertion (A) [Cr(H_(2)O_(6))]Cl_(2) and [Fe(H_(2)O)_(6)]Cl_(2) are reducing in nature. Reason (R) Unpaired electrons are present in their d-orbitals.

Brown coloured ring formed in nitrate test has formula [Fe(H_(2)O)_(5)NO]SO_(4) . Unpaired electron in Fe is

NaNO_(3)+FeSO_(4)+H_(2)SO_(4) to underset(("Ring complex"))([Fe(H_(2)O)_(5)NO]SO_(4))

Find the oxidation number of Fe in [Fe(H_2O)_6]^(3+)

[Fe(H_2O)_6]^(3+) has five unpaired electrons while [Fe(CN)_6]^(3-) has one unpaired electron. Explain.

Knowledge Check

  • Assertion : [Fe(H_(2)O)_(6)]^(2+) is sp^(3) d^(2) hybridised and paramagnetic complex ion . Reason : [Fe(H_(2)O)_(6)]^(2+) has four unpaired electrons as H_(2)O is a weak field ligand .

    A
    If both Assertion and reason are true and reason is the correct explanation of assertion
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
    C
    If assertion is true but reason is false
    D
    if both assertion and reason are false