Short Answer Type
Long Answer TypeThe important charateristics of transition elements:
(i) These elements are divided into four transition series each marking the filling of 3d, 4d, 5d and 6d orbitals respectively.
(ii) They are hard and brittle metals having high melting and boiling points.
(iii) They are good conductors of heat and electricity.
(iv) They show variable oxidation states.
(v) They are generally paramagnetic due to the presence of unpaired electrons.
(vi) They form coloured ions.
(vii) These elements have a strong tendency to form complexes.
(viii) Most of the transition elements (Mn, Co, Ni, Cr) and their compounds are used as catalysts.
Short Answer TypeLong Answer TypeShort Answer TypeLanthanoides and actinodes are placed in separate rows at the bottom of the periodic table. Explain the reason for this arrangement.
Long Answer TypeShort Answer TypeName the block to which the elements with following valence shell electronic configurations belong:
(i) 3s2 3p5
(ii) 3d104s2
(iii) 3p64s2
(iv) 6s2 4f0
(v) 4s1 3d5
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