The lanthanide conctraction is responsible for the fact that
The general electronic configuration of transition elements is
The correct order of ionic radii of Y3- , La3+ ,Eu3+ and Lu3+ is
The aqueous solution containing which one of the following ions will be colourless
Among the following series of transition metal ions, the one in which all metals ions have 3d2 electronic configuration is
The main reason for larger number of oxidation states exhibited by the actinoids than the corresponding Lanthanoids
Which of the following ionic species will impart colour to an aqueous solution
Which one of the following characteristic of the transition metals is associated with their catalytic activity
A red solid is insoluble in water. However it becomes soluble if
The colour of transition metal compound is due to
Hair dyes contain
Which of the following in Rinmanns green?
Which one of these is not known?
Green vitriol is
The element which forms ions in dimeric state is
Anhydrous ferric chloride is prepared by
Brass is an alloy of Cu with
Which belongs to the actinides series ?
Silver, gold, platinum, iron, copper and titanium are part of the
The colour of light absorbed by an aqueous solution of CuSO4 is
German silver alloy contains
The catalytic activity of the transition metals and their compounds is described to
In chromite ore, the oxidation number of iron and chromium are respectively
Which of the following has the maximum number of unpaired d-electrons?
Metal ion responsible for the Minamata disease is
Least paramagnetic property is shown by
Paramagnetism is exhibited due to which one of the following reason?
Silver iodide is used for producing artificial rain because AgI
Which one of the following transition element has the lowest value of enthalpy of atomisation?
Why d-block element form complexes?
which of the following is amphoteric oxide?
Copper exhibits only + 2 oxidation state in its stable compounds. Why ?
The spin only magnetic moment of Fe^2+ ion (in BM) is approximately
the colour of KMno4 is due to
What is the ground state electron configuration of the Mn ^2+ ion?
The colour of Cu 2+/2 containing salt is
knowing that the chemistry of lanthanoids (ln) is
identify the incorrect statement among the following
the lanthanoid Contraction is responsible for the fact that
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