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# Iron is a/an:

Last updated date: 26th Mar 2023
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Hint :The metals which consist of partially filled d-subshell or their cationic form have incomplete d-subshell is termed as transition metal. Generally, the metals of d-block elements are known as transition metals. These metals have a special property of showing variable oxidation states.

The element of iron metal is symbolized by $Fe$ and its atomic number is $26$ . The origin of the symbol $Fe$ is derived from the Latin word “Ferrum” which means iron. It is placed at the sixth position of the first transition metal series i.e., $3d$ series. Iron metal shows a broad range of oxidation states i.e., $- 2$ to $+ 7$ . But the most common oxidation states in which iron exists are $+ 2$ and $+ 3$ .
The noble gas configuration of iron metal is as follows:
$Fe = [Ar]3{d^6}4{s^2}$
As the d-subshell of the atom is partially filled i.e., some of the orbitals are vacant. Therefore, we can conclude that iron is a transition metal element.

The naming of compounds of iron is based on the oxidation state of the iron. If the iron metal forms a compound while having an oxidation state of $+ 2$ , then the ion is named as ferrous whereas if the oxidation state of iron is $+ 3$ then the ion is named as ferric.