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Which of the following statements are correct?
(i) Chromium has the highest melting point among the series 1 metals.
(ii) Number 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 number increases.
(a) (i) and (iii)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (i), (ii) and (iii)

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