#iron notes

[er-cryptid]

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[er-cryptid]

Iron

-- Fe

-- atomic number 26

-- atomic weight is 55.845

-- group 8

-- period 4

-- D-block

-- transition metal

-- electron configuration is [Ar] 3d^6 4s^2

-- metallic color

-- lustrous

-- most common element on Earth by mass

-- solid at STP

-- melting point is 1811 K

-- boiling point is 3134 K

-- density is 7.874 g/cm^3

-- four stable isotopes      -- 54-Fe      -- 56-Fe      -- 57-Fe      -- 58-Fe

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