Question
- Elemental silicon does not form graphite like structure as carbon does. Give reason.
- Arrange hyrides of group 14 elements in increasing order of reducing power.
✓
Answer
- Silicon cannot form $\text{p}\pi-\text{p}\pi$ bond like 'C' forms in graphite due to bigger atomic size, therefore, it can not form graphite like structure.
- CH4 < SiH4 < GeH4 < SnH4 < PbH3 is increasing order of reducing power because bond dissociation enthalpy decreases with increases in bond length due to increase in atomic size of group 14 element.
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