Question

In the two compounds FeSO4 and Fe2(SO4)3, iron has a valency of two in the first one and three in the second Give the name of the two iron ions based upon thier valencies . what is this phenomenon called ?

Answer 1

$Fe^{3+}$ is called the ferric cation. $Fe^{2+}$ is a ferrous ion.

• $Fe^{3+}$ has the electronic subshell structure 1s²2s²2$p^{6}$3s³3$p^{6}$3$d^{5}$. The d-subshell has 5 electrons. It is called the ferric cation. $Fe^{2+}$ is a ferrous ion.
• Atoms on their own can gain or lose electrons. When this occurs, they develop into monatomic ions. Atoms typically gain or lose a specific number of electrons when doing so, which results in a distinctive overall charge.
• First, all elements except for one (hydrogen) that create cations are metals, whereas all elements that form anions are nonmetals. The tendency of metals to produce cations in contrast to the tendency of nonmetals to form anions is really one of the chemical characteristics of metals and nonmetals. Second, the majority of atoms combine to form ions with a single distinctive charge.

Hence, $Fe^{3+}$ is called the ferric cation. $Fe^{2+}$ is a ferrous ion.

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