Greetings. 

Since high school chemistry, learned the formulas of compounds always using whole numbers.

What is this way of subscript ? --->   ...showed that GdSi₂Ge₂ and LaFe_11.384Mn_0.356Si_1.26H_1.52 had TEWIs that were always lower...

Never seen before; can anyone explain ?   (text copied from a website)

14 minutes ago, Externet said:

What is this way of subscript ? --->   ...showed that GdSi₂Ge₂ and LaFe_11.384Mn_0.356Si_1.26H_1.52 had TEWIs that were always lower...

Never seen before; can anyone explain ?   (text copied from a website)

https://en.wikipedia.org/wiki/Non-stoichiometric_compound

 

10 hours ago, Sensei said:

https://en.wikipedia.org/wiki/Non-stoichiometric_compound

 

That short article is the basis of it. +1

 

11 hours ago, Externet said:

Since high school chemistry, learned the formulas of compounds always using whole numbers.

 

Do you want more ?