Stoichiometry terminology/chemical formula

[Rajini]

Hello All,

Is it correct to write the compound U(As_1-xS_x)₂ as UAs_2-2xS_2x?. So for x=0.5 the compound is UAs₁S₁.
Thanks, Rajini.

 

[Borek]

It can be right, but sometimes the first version (with (whatever)₂) is meant to suggest composition of the compound.

So Ca(CN)₂ and CaC₂N₂ both describe the composition of the same calcium cyanide, but the first formula is much more easy to read.

Could be there is a similar logic behind U(As_1-xS_x)₂.