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1
JEE Main 2021 (Online) 25th July Morning Shift
Numerical
+4
-1
Three moles of AgCl get precipitated when one mole of an octahedral co-ordination compound with empirical formula CrCl3.3NH3.3H2O reacts with excess of silver nitrate. The number of chloride ions satisfying the secondary valency of the metal ion is ______________.
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2
JEE Main 2021 (Online) 22th July Evening Shift
Numerical
+4
-1
The total number of unpaired electrons present in [Co(NH3)6]Cl2 and [Co(NH3)6]Cl3 is
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3
JEE Main 2021 (Online) 20th July Evening Shift
Numerical
+4
-1
An aqueous solution of NiCl2 was heated with excess sodium cyanide in presence of strong oxidizing agent to form [Ni(CN)6]2$$-$$. The total change in number of unpaired electrons on metal centre is _______________.
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4
JEE Main 2021 (Online) 20th July Morning Shift
Numerical
+4
-1
The spin-only magnetic moment value for the complex [Co(CN)6]4$$-$$ is __________ BM.

[At. no. of Co = 27]
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