anonymous
  • anonymous
Atomic radius of Cu is greater than Cr but ionic radius of Cr2+ is greater than Cu2+ Why?
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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JFraser
  • JFraser
compare the number of protons and electrons in each atom and ion. The difference in electron distributions makes all the difference
anonymous
  • anonymous
I don't get it. 29 protons holding 27 electrons in Cu 2+ ion 3d9, 4s0 configuration 24 protons holding 22 electrons in Cr 2+ ion 3d4, 4s0 configuration
JFraser
  • JFraser
that's exactly the reason. the imbalance of proton\electron pull of each nucleus determines which ion will have a larger radius

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anonymous
  • anonymous
What's the difference in the pull in this case? I need a logical explanation
aaronq
  • aaronq
"What's the difference in the pull in this case?" If you want a quantitative answer, calculate \(Z_{eff}\) for valence e using slater's rules

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