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5 votes
Place the following elements in order from MOST to LEAST reactive:

Carbon
Iridium
Helium
Sulfur
Hydrogen

User Xiuyi Yang
by
4.0k points

1 Answer

2 votes
Carbon is 6
Iridium is 77
Helium is 2
Sulfur is 16 ( not sure)
Hydrogen is 1
So
Hydrogen
Helium
Carbon
Sulfur
Iridium
Sorry if I’m incorrect.
User Jonmrich
by
4.1k points