- #1
jeza
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1. I am a metal. My atomic radius is smaller than the atomic radius of the element with one fewer protons, but my +1 ionic radius is larger than the +1 ionic radius of the element with one fewer protons. Of the two elements in my group that have biological importance, I am the one with higher electro-negativity.
NO relevant equations
3. So, atomic radii size decreases across periods but increases down periods with the slight abnormalities in the 4th and 5th period once the d and f block orbitals are introduced. Originally I was thinking that this might apply to a group 1 metal, however all are larger than the noble gasses that have one less electron. Then I thought that Fe [Ar] 4s2 3d6 would be smaller than Mn [Ar]4s2 3d5 but fell down when Fe+ [Ar] 3d7 would still be smaller than Mn+ [Ar] 3d6. It would be greatly appreciated if someone could assist not only with the question itself but also with the differences relative ion radii sizes (which seems to be why I can not find an answer to this problem)
Thanks in advance for any assistance
NO relevant equations
3. So, atomic radii size decreases across periods but increases down periods with the slight abnormalities in the 4th and 5th period once the d and f block orbitals are introduced. Originally I was thinking that this might apply to a group 1 metal, however all are larger than the noble gasses that have one less electron. Then I thought that Fe [Ar] 4s2 3d6 would be smaller than Mn [Ar]4s2 3d5 but fell down when Fe+ [Ar] 3d7 would still be smaller than Mn+ [Ar] 3d6. It would be greatly appreciated if someone could assist not only with the question itself but also with the differences relative ion radii sizes (which seems to be why I can not find an answer to this problem)
Thanks in advance for any assistance