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(i) How would you account for the following:
(a) The transition elements exhibit high enthalpies of atomization.
(b) The 4d and 5d series of the transition metals have more frequent met- al metal bonding in their compounds than do the 3d metals.
(c) There is a greater range of oxidation states among the Actinoids than that in the lanthanoids.
(ii). Write the complete chemical equation for each of the following:
(a) An alkaline solution of KMnO4 reacts with an iodide.
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Explain the steps involved in the preparation of either potassium dichromate from sodium chromate or potassium permanganate from manganese dioxide.
Explain about Phosphprous and its allotrpes White phosphorus - crystalline solid P 4 Red phosphorus - polymeric solid Scarlet phosphorus Violet phosphorus
similarities between the latter actinides and latter lanthanides
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