Respuesta :
Answer:
E) [tex]Fe_2(SO_4)_3[/tex] iron(III) sulfide
Explanation:
Naming of the ionic compounds:-
The name of the cation is written first and the the name of the anion is written after the name of the cation separated by single space.
The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
In case of transition metals, the oxidation state are written in roman numerals in bracket in front of positive ions.
(a) , given ionic compound:-
[tex]FeSO_4[/tex] is formed of cation, [tex]Fe^{2+}[/tex] and anion,[tex]SO_4^{2-}[/tex]
Thus, the name must be iron(II) sulfate.
(b) , given ionic compound:-
[tex]Fe_2(SO_4)_3[/tex] is formed of cation, [tex]Fe^{3+}[/tex] and anion,[tex]SO_4^{2-}[/tex]
Thus, the name must be iron(III) sulfate not iron(III) sulfide.
Hence, E is incorrectly paired.
(c) , given ionic compound:-
[tex]FeS[/tex] is formed of cation, [tex]Fe^{2+}[/tex] and anion,[tex]S^{2-}[/tex]
Thus, the name must be iron(II) sulfide.
(d) , given ionic compound:-
[tex]FeSO_3[/tex] is formed of cation, [tex]Fe^{2+}[/tex] and anion,[tex]SO_3^{2-}[/tex]
Thus, the name must be iron(II) sulfite.
Answer:
Option E is not correct. Fe2(SO4)3 is iron(III)sulfate not iron(III) sulfide
Explanation:
A) FeSO4 iron(II) sulfate
⇒ Fe has an oxidation number of +2 or SO4^2- has oxidation number 2-
⇒ FeSO4
B) Fe2 (SO3)3 iron(III) sulfite
⇒SO3^ has an oxidation number of -2
⇒ Fe^3+ has an oxidation number of +3
⇒ Fe2(SO3)3
C) FeS iron(II) sulfide
⇒ Fe has an oxidation number of +2
⇒ Sulfur has an oxidation number of -2
⇒ FeS
D) FeSO3 iron(II) sulfite
⇒ Fe has an oxidation number of +2
⇒ Sulfite = SO3^2- and has an oxidation numberof -2
⇒ FeSO3
Fe2 (SO4)3 iron(III) sulfide
⇒ SO4^2- has an oxidation number of 2-
⇒ Fe^3+ has an oxidation number of 3+
⇒ Fe2(SO4)3 is iron(III)sulfate not iron(III) sulfide
Option E is not correct. Fe2(SO4)3 is iron(III)sulfate not iron(III) sulfide
