19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following ions has the maximum number of unpaired d electrons ?
Which of the following is not true about the transition elements ?
For a given ion, the magnetic moment is 2.83 BM. The total spin (s) of all the unpaired electrons is
The covalent radii of transition metals decrease from left to right in a period because
Which of the following metals does not show variable oxidation states ?
Which of the following ions is diamagnetic ?
Which of the following ions is paramagnetic ?
The highest possible oxidation state shown by osmium in its compounds is
Which of the following statements is correct ?
The noble character of platinum and gold is favoured by
Among the transition metals, the melting points of Zn, Cd and Hg are relatively low because
Transition metals
The last electron of a d-block element occupies the orbital
The electronic configurations of the first four members of the actinide series cannot be written accurately in a regular manner because of
Which of the following elements has completely filled d orbitals (the d10 configuration) ?
The catalytic activity of transition metals and their compounds is ascribed mainly to (Mains 2012)
Identify the alloy containing a non-metal as a constituent in it. (AIPMT-2012)
Which of the following group of transition metals is called coinage metals? (RPMT 2008)
Which of the following compounds is coloured ? (AIIMS 2008)
What is the correct order of spin only magnetic moment (in BM) of Mn2+, Cr2+ and Ti2+? (AFMC 2008)
Essential component of amalgam is (RPMT 2007)
Reason of passivity of iron is (RPMT 2007)
Acidified potassium permanganate solution is decolourised by (AFMC 2007)
Which one of the following ions is the most stable in aqueous solution ? (At. no. Ti = 22, V = 23, Cr = 24, Mn = 25) (CBSE AIPMT 2007)
Silver nitrate solution is kept in brown bottles in laboratory because :