Answer: Similar atomic radii allow atoms to substitute for each other in the metallic lattice.
- A Similar atomic radii allow atoms to substitute for each other in the metallic lattice
- B Strong ionic bonding forms directly between the two different metal atoms in most textbook accounts
- C Every transition metal happens to share an identical valence electron count during normal conditions
- D All transition metals possess exactly two valence electrons each as generally observed
Correct answer: A. Similar atomic radii allow atoms to substitute for each other in the metallic lattice
Explanation: Transition metal atoms are of similar size; they can replace each other in metal lattices without distorting the crystal structure, forming alloys with tunable properties.
Aqueous solutions of transition metal ions show characteristic colours caused by electrons absorbing visible light to jump between split d-orbitals; the exact colour depends on the metal, its oxidation state, and surrounding ligands.
Concept context
Transition metals (d-block) and lanthanides/actinides (f-block). Known for coloured compounds, variable oxidation states, complex formation, and catalytic properties. Frequently tested in JEE and NEET.