1
JEE Advanced 2015 Paper 1 Offline
Numerical
+4
-0
If the freezing point of a 0.01 molal aqueous solution of a cobalt (III) chloride-ammonia complex(which behaves as a strong electrolyte) is – 0.0558oC, the number of chloride(s) in the coordination sphere of the complex is [Kf of water = 1.86 K kg mol–1 ]
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2
JEE Advanced 2015 Paper 1 Offline
Numerical
+3
-1

For the octahedral complexes of Fe3+ in SCN$$-$$ (thiocyana-to-S) and in CN$$-$$ ligand environments, the difference between the spin-only magnetic moments in Bohr magnetons (when approximated to the nearest integer) is __________.

[Atomic number Fe = 26]

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3
JEE Advanced 2013 Paper 1 Offline
Numerical
+3
-0

EDTA4$$-$$ is ethylenediaminetetraacetate ion. The total number of N$$-$$Co$$-$$O bond angles in [Co(EDTA)]1$$-$$ complex ion is ________.

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4
IIT-JEE 2009 Paper 2 Offline
Numerical
+3
-1

The number of water molecule(s) directly bonded to the centre in CuSO$$_4$$ . 5H$$_2$$O is __________.

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