Ethylenediaminetetraacetic Acid (EDTA) Is The Antidote For Lead Poisoning. It Is Administered In The Form Of 

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Ethylenediaminetetraacetic acid (EDTA) is the antidote for lead poisoning. It is administered in the form of 


Correct option is

Calcium dihydrogen salt

EDTA forms a more stable coordination complex with lead than with calcium or sodium and in this form passes out form the body without harmful effects. The calcium salt is used so that any excess of EDTA will not remove Ca2+ ions from the body.



Mn2+ forms a complex with Br ion. The magnetic moment of the complex is 5.92 B.M. What would be the probable formula and geometry of the complex? 


How many isomers are possible for the complex ion [Cr(NH3)(OH)2Cl3]2–


A complex of certain metal has the magnetic moment of 4.91 BM whereas another complex of the same metal with same oxidation state has zero magnetic moment. The metal ion could be


The EAN of metal atoms in Fe(NO)2(CO)2 and Co2(CO)8 respectively are


The value of in HxCr(CO)5 is


Following Sidwick’s rule of EAN, Co2(CO)x will be



In the reactions  


two isomers of the product are obtained. The initial complex is


On treatment of [Ni(NH3)4]2+ with concentrated HCl, two compounds I and II having the same formula, Ni(NH3)2Cl2 are obtained. I can be converted into II by boiling with dilute HCl. A solution of I reacts with oxalic acid to form [Ni(NH3)2(C2O4) whereas II does not react. Point out the correct statement of the following


The aqueous 0.01 m of [Co(NH3/6][Co(NH3)(NO2)5]3 is expected to have the depression of freezing point (Kf for water = 1.86 K/m)



Which of the following ions are expected to be paramagnetic to the same extent? 

I. [FeF6]3–                              II. [MnCl4]2–

III. [NiCl4]2–