Question #b0fca

2 Answers
B M.
Nov 19, 2017

Iron and sulphur

Explanation:

In various ratios (ie different formulae), depending on which sulphide we are talking about.

anor277
Nov 19, 2017

Well we could have #"ferrous sulfide...."#, #FeS#, #Fe(+II)#

Explanation:

Or #"ferric sulfide...."#, #Fe_2S_3#, i.e. #Fe(+III)#

#"Iron pyrites"#, so-called #"fools' gold"# is #FeS_2#, contains the sulfur analogue of peroxide....#O_2^(2-)#, and thus we have formally #Fe(+II)#....

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