Question #0ed7c

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Question #0ed7c

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Answer 1 · 2015-09-14T19:41:15

What is $F e^{3 +}$ $Fe^(3+)$ ? This is simply an iron atom that has lost 3 electrons.

Explanation:

$F e^{3 +} (a q)$ $Fe^(3+)(aq)$ is the $F e^{3 +}$ $Fe^(3+)$ cation in aqueous (water) solution. It is an $F e^{3 +}$ $Fe^(3+)$ nucleus surrounded by 6 water molecules, which could be represented as ${[F e {(O H_{2})}_{6}]}_{6}^{3 +}$ $[Fe(OH_2)_6]^(3+)$ . This species acts as an acid in aqueous solution, and its colour often reflects its acid/base behaviour.

Answer 2 · 2015-09-15T10:03:27

$F e$ $Fe$ is a transition metal. It has a variable valency. it has the electronic configuration: $[A r] 3 d^{6} 4 s^{2}$ $[Ar] 3d^6 4s^2$ . The orbitals $3 d$ $3d$ and $4 s$ $4s$ are close in energy and sometimes $F e$ $Fe$ (or more precisely the $4 s$ $4s$ orbital) gives up the outer 2 electrons resulting in $F e^{+} 2$ $Fe^+2$ and sometimes the $3 d$ $3d$ orbital also loses an electron alongwith the 2 electrons from $4 s$ $4s$ orbital resulting in $F e^{+} 3$ $Fe^+3$ . $F e^{+} 3$ $Fe^+3$ is more stable than $F e^{2}$ $Fe^2$ , this is beacuse $F e^{+} 2$ $Fe^+2$ has more electron pair-electron pair repulsion in the $d$ $d$ sub shell.

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