The atomic radii of the metals of the third (5d) series of transitions – InterviewSolution

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1.	The atomic radii of the metals of the third (5d) series of transitions elements are virtually the same as those of the corresponding members of the second (4d) series. Explain.
Answer» In between-second transition series (4d series ) of transition series (5 series ), fourteen elements (La with Z=57 to Hf with Z=72) are present. Since these elements are involved in the lanthanoids contraction,this effect is obviously experienced by the element of 5d series also. As a result, the difference in the atoic sizes of the element belonging to the two series is negligible. These sizes are virtually the same.

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