What is the position of iron (Z = 26) in periodic table? Explain why i

1.	What is the position of iron (Z = 26) in periodic table? Explain why is Fe3+ more stable than Fe2+?
Answer» Iron (Fe) is placed in the 4^th period and group 8 of the modern periodic table. Electronic configuration of Fe²+ : 1s² 2s² 2p⁶ 3s² 3p6 3d6 Electronic configuration of Fe³⁺ : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ Due to the presence of half filled ‘d’ orbital, Fe³⁺ is more stable than Fe²⁺.

What is the position of iron (Z = 26) in periodic table? Explain why is Fe3+ more stable than Fe2+?

Answer»

Iron (Fe) is placed in the 4^th period and group 8 of the modern periodic table.

Electronic configuration of Fe²+ : 1s² 2s² 2p⁶ 3s² 3p6 3d6

Electronic configuration of Fe³⁺ : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵

Due to the presence of half filled ‘d’ orbital, Fe³⁺ is more stable than Fe²⁺.