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Transition elements; industrial uses of 3d elements

Short answer

Transition elements have a partly filled d-subshell. Industrial uses: Fe for steel and Haber catalyst; Cr for stainless steel; Ni for hydrogenation and alloys; Cu for wires, brass; Zn for galvanizing and dry cells; Ti for aircraft alloys and TiO₂ pigment; V as V₂O₅ catalyst in contact process; Mn for steel and dry cells.

What are transition elements? List the industrial application of 3d transition elements.

Transition elements: d-block elements having a partly filled d subshell in the atom or in a common ion.

Industrial applications of 3d elements

  • Iron: steel and cast iron for construction, machines and vehicles; catalyst in Haber's process for NH₃.
  • Chromium: stainless steel, chrome plating (corrosion resistance), nichrome wire.
  • Nickel: hydrogenation catalyst for vegetable oil, electroplating, Ni–Cd batteries, alloys (nichrome, monel).
  • Copper: electrical wires, brass and bronze, heat exchangers.
  • Zinc: galvanising iron, brass, dry cells.
  • Titanium: light, strong alloys in aircraft; TiO₂ as white pigment.
  • Vanadium: V₂O₅ catalyst in the contact process for H₂SO₄; vanadium steel.
  • Manganese: manganese steel; MnO₂ in dry cells.

✓ Answer checked by Claude Opus 5.5 (high effort)

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