Complex sentence: It is a member of the 7th period and is placed in the group 10 elements, although no chemical experiments have yet been carried out to confirm that it behaves as the heavier homologue to platinum in group 10.
Split into simpler sentences: It is a member of the 7th period and is placed in the group 10 element. Although no chemical experiments have yet been carried out to confirm that it behaves as the heavier homologue to platinum in group 10.