1
JEE Main 2021 (Online) 18th March Morning Shift
Numerical
+4
-1
The total number of unpaired electrons present in the complex K3[Cr(oxalate)3] is _____________.
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2
JEE Main 2021 (Online) 17th March Evening Shift
Numerical
+4
-1
On complete reaction of FeCl3 with oxalic acid in aqueous solution containing KOH, resulted in the formation of product A. The secondary valency of Fe in the product A is __________. (Round off to the Nearest Integer).
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3
JEE Main 2021 (Online) 16th March Evening Shift
Numerical
+4
-1
[Ti(H2O)6]3+ absorbs light of wavelength 498 nm during a d $$-$$ d transition. The octahedral splitting energy for the above complex is ____________ $$\times$$ 10$$-$$19 J. (Round off to the Nearest Integer). h = 6.626 $$\times$$ 10$$-$$34 Js; c = 3 $$\times$$ 108 ms$$-$$1
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4
JEE Main 2021 (Online) 16th March Morning Shift
Numerical
+4
-1
The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of CoCl3 . 4NH3 is _________. (Round off to the Nearest Integer).
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