Identify the correct statements
a) In a group the correct order of melting points is 3d < 4d < 5d
b) In 3d and 4d series, VII B group elements have exceptionally low melting points
c) II B group have highest melting points in any series.
d) The correct order of melting points is Cu > Ag > Au

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Only A, D, C are correct

Only A, B, D are correct

Only A, B are correct

Only B, C, D are correct

answer is C.

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Detailed Solution

The increasing order of MP and BP of 3d, 4d and 5d-series transition metals are as follows, 3d < 4d < 5d. The fact can be explained on the basis of their size and metallic character.

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