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![[Post New]](/templates/default/images/icon_minipost_new.gif) 29 Apr 2008 08:13:04 IST
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why the 1st I.E. of 5d elements are higher than those of 3d and 4d elements?
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29 Apr 2008 11:54:23 IST
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dude, due to poor screening/sheilding effect of f-electrons the size of the atom becomes too compact....
ie in 5d the charge density is a bit high than 3d-4d...
reason is given above...hence is the reason for IE.
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