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Elements with Z =107, 108 and 109 have ...

Elements with `Z =107, 108` and `109` have been made recently. Indicate the groups to which they belong.

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The electronic configurations of these elements are:
`{:(Z= 107, [Rn] 5f^(14) 6d ^(5) 7s ^(2)), (Z = 108, [RN] 5f ^(14) 6d ^(6) 7s ^(2)), (Z=109, [Rn]5f ^(14) 6d^(7) 7s ^(2)):}`
These elements will be placed in d-block in groups 7th, 8th and 9th respectively.
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