NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice
Which of the following does not apply to bonding in metals ?
Options
- ANon-directional bonds
- BMobility of valence electrons
- CDelocalisation of electrons
- DHighly directed bonds
Correct answer
D. Highly directed bonds
Step-by-step solution
Metallic bonding is not directional like covalent bonding, it is like ionic bonding in the sense that the force of attraction between the positive metal ions and the mobile electrons acts in every direction about the fixed (immobile) metal ions of the metal crystal lattice, but in ionic lattices none of the ions is mobile - a big difference between a metal bond and an ionic bond. The outer electrons (–) from the original metal atoms are free to move around between the positive metal ions formed (+). These 'free' or