1
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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2
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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