Periodic table of the elements

Periodic table of the elements

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Fe (iron)

Tab. 1: iron

Name of the element:	iron
Latin name:	Ferrum
English name:	Iron
French name:	Fer
Symbol:	Fe
Atomic number:	26
Condition at 25 $° C$ :	solid, metal
Frequency (in $ppm$ ):	41000
Discovered by:	approx. 2500 BC Chr.
Electron configuration:	$[Ar] 3 d^{6} 4 s^{2}$
Oxidation states:	+2, +3, +6
Relative atomic mass:	55.847
Electronegativity:	1.83 (Pauling) 1.64 (Allred)
Atomic radius (in $pm$ ):	124.1
Ionization energy (in $eV {atom}^{-1}$ ):	7.870
Density (in $kg m^{-3}$ ):	7874
Melting temperature (in $K$ ):	1808
Boiling temperature (in $K$ ):	3023

Tab. 2: Isotopes of iron

Mass number	Atomic mass	Frequency /%	Nuclear spin
$52^{*}$	$51.9481$	$0$	$0$
$54$	$53.9396$	$5.82$	$0$
$55^{*}$	$54.9383$	$0$	$- \frac{3}{2}$
$56$	$55.9349$	$91.72$	$0$
$57$	$56.9354$	$2.10$	$0$
$58$	$57.9333$	$0.28$	$0$
$59^{*}$	$58.9349$	$0$	$+ \frac{3}{2}$
$60^{*}$	$59.9341$	$0$	$0$

$^{*}$ Isotope is not stable and decays

Video: GCSE Chemistry - Modern Periodic Table #7 (August 2022).