alleryGraphite is soft and a good conductor of electricity because:
AIt is amorphous
BIt has ionic bonds
CIts carbons share only 2 electrons
DIt has loosely held free electrons in layers
Answer & Solution
Correct answer: D. It has loosely held free electrons in layers
1. Graphite has layered hexagonal sheets of carbon atoms.
2. Each carbon forms three sigma bonds, leaving one electron free per atom.
3. These delocalised electrons move freely along the layers.
4. Hence graphite conducts electricity well.
5. Weak forces between layers allow them to slide, making it soft.
_Source: syllabus Science Ch 4 'Carbon and its Compounds' (byjus.com extract)_
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