Can you explain why the size of (Zr+4) is almost equal to (Hf+4)?
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This is a reason of poor screening by 4f electron. The 6s electrons are drawn towards the nucleus, thus resulting in a smaller atomic radius.
krittika03:
yes but it's applicable when they are in neutral state. In +4 oxidation state, they acquire the configuration of Cr and Xe respectively. so shouldn't the size of Hf+4 be greater than Zr+4?
ok
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