1.Astatine (At)

1.Astatine (At)

2.Francium (Fr)

2.Francium (Fr)

3.Technetium (Tc)

3.Technetium (Tc)

4.Rhodium(rh)

4.Rhodium(rh)

5.Iridium(Ir_)

5.Iridium(Ir_)

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