The aqueous solution containing which one of the following ions will be colourless
The general electronic configuration of transition elements is
The main reason for larger number of oxidation states exhibited by the actinoids than the corresponding Lanthanoids
Among the following series of transition metal ions, the one in which all metals ions have 3d2 electronic configuration is
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
Hair dyes contain
The colour of transition metal compound is due to
Which of the following in Rinmanns green?
The element which forms ions in dimeric state is
Which one of these is not known?
Green vitriol is
Brass is an alloy of Cu with
The colour of light absorbed by an aqueous solution of CuSO4 is
In chromite ore, the oxidation number of iron and chromium are respectively
Anhydrous ferric chloride is prepared by
Which belongs to the actinides series ?
Silver, gold, platinum, iron, copper and titanium are part of the
The catalytic activity of the transition metals and their compounds is described to
Metal ion responsible for the Minamata disease is
German silver alloy contains
Least paramagnetic property is shown by
Which of the following has the maximum number of unpaired d-electrons?
Paramagnetism is exhibited due to which one of the following reason?
Why d-block element form complexes?
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?
which of the following is amphoteric oxide?
Copper exhibits only + 2 oxidation state in its stable compounds. Why ?
the colour of KMno4 is due to
The spin only magnetic moment of Fe^2+ ion (in BM) is approximately
The colour of Cu 2+/2 containing salt is
What is the ground state electron configuration of the Mn ^2+ ion?
which of the following arrangements does not represent the
identify the incorrect statement among the following
knowing that the chemistry of lanthanoids (ln) is
the lanthanoid Contraction is responsible for the fact that
in context with the transition elements, which of the following statements is incorrect?
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