Which of the following primary and secondary valencies are not correctly marked against the compound?

[C r (N H_{3})_{6}] C l_{3}, p = 3, s = 6

No worries! We‘ve got your back. Try BYJU‘S free classes today!

K_{2} [P t C l_{4}], p = 2, s = 4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

[P t (N H_{3})_{2} C l_{2}], p = 0, s = 4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

[C u (N H_{3})_{4}] S O_{4}, p = 4, s = 4

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D $[C u (N H_{3})_{4}] S O_{4}, p = 4, s = 4$
Primary valency is satisfied by anions or cations. Secondary valency refers to coordination number.

In $[C r (N H_{3})_{6}] C l_{3}$ primary valency is 3 and secondary valency is 6. Since chromium is coordinated to 6 ammonia ligands, secondary valency is 6. Since chlorine ions have $- 1$ charge and there are 3 of them, primary valency is 3.

In $K_{2} [P t C l_{4}]$ primary valency is 2 and secondary valency is 4. Since platinum is coordinated to 4 chloride ligands, secondary valency is 4. Since potassium ions have $+ 1$ charge and there are 2 of them, primary valency is 2.

In $[P t (N H_{3})_{2} C l_{2}]$ primary valency is 0 and secondary valency is 4. Since platinum is coordinated to 2 ammonia and 2 chloride ligands, secondary valency is 4. Since no ions are attached to the complex, primary valency is 0.

In $[C u (N H_{3})_{4}] S O_{4}$ primary valency is 2 and secondary valency is 4. Since, copper is co-ordinated to 4 ammonia ligands, secondary valence is 4. Since sulphate ions has $- 2$ charge, primary valence is 2.

Suggest Corrections

Similar questions

Question 02

Which of the following options does not represent ground state electronic configuration of an atom ?

(a) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{8} 4 s^{2}$ (b) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{9} 4 s^{2}$ (c) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{1}$ (d) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1}$

Q. The electronic configuration of

C a^{2 +}

is:

Q. Valence shell electronic configuration of

C r^{2 +}

is:

Q. The valence shell electronic configuration of

C r^{2 +}

ion is :

Q. Choose the

s -

block element in the following :

Join BYJU'S Learning Program