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The transition elements are those elemen...

The transition elements are those elements which have partially filled penultimate d-subshells in their elementary form or in their commonly occurring oxidation states.

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Which element of group 13 forms the most stable +1 oxidation state.

Why do transition elements show variable oxidation state?

Which of the following element(s) have only one non-zero oxidation state.

Which transition element does not exhibit variable oxidation state?

The element which forms oxides in all oxidation states +1 to +5 is.

The IUPAC definition of a transition element is that it is an element that has an incomplete d-subshell in either the neutral atom or its ion. Thus the group 12 elements are member of the d-block but are not transition elements. Chemically solft members of the d-block occurs as sulphide minerals and are partially oxidised to obtain the metal, the more electropositive 'hard' metals occurs as oxides and are extracted by reduction. Opposite to p-block elements, the higher oxidation states are favoured by the heavier elements of d-block Metals on the right of the d-block tend to exist in low oxidation states and form complexes with the ligands. Square-planar complexes are common for the platinum metals and gold in oxidation states that yield d^8 electronic configuration, which include RH(I),Ir(I),Pd(II),Pt(II) and Au(III). The most distinctive features/properties of transition metal complex is their wide range of colours.The crystal field theory attributes the colour of the coordination compounds to d-d transition of the electron.It is important to note that (a) in absence of ligand, crystal field spilling does not occur and hence the substances is colourless, (b) the type of ligand also influences the colour of the complexes. Which of the following has dsp^2 hybridisation and is diamagnetic in nature ? (i) Na_4[Cr(CO)_4] , (ii) [Ni(DMGH)_2] , (iii) [PtHBr(PEt_3)_2] (iv) [As(SCN)_4]^(3-) , (v) [AuBr_4]^(-)

Why Cu, Ag and Au are transition elements although they have completely filled d -orbitals ?

Which of the element shows +4 oxidation state?

The element which shows both positive & negative oxidation state is :

Which transition elements exhibit +8 oxidation state

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