1.

Which of the following statements are correct? (i) Chromium has the highest melting point among the series 1 metals. (ii) Nwnber of unpaired electrons is greater in Cr than other elements of series 1. (iii) In any row the melting point of transition metal increases as the atomic nwnber increases.

Answer»

(i) and (iii)
(i) and (II)
(ii) and (iii)
(i), (ii) and (iii)

Solution :In any ROW the melting points of TRANSITION metals RISE to a maximum at `d^(5)` except for anomalous values of Mn and Tc and falls regularly as the atomic number increases.


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