Multiple choice general knowledge science & technology

The group of metals Fe, Co, Ni may best called as

  1. transition metals

  2. main group metals

  3. alkali metals

  4. rare metals

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A Correct answer
Explanation

Fe (iron), Co (cobalt), and Ni (nickel) are classic examples of transition metals, located in the d-block of the periodic table. They're characterized by partially filled d orbitals and multiple oxidation states.