Explain the following :Why does the element silicon, not form a graphi

1.	Explain the following :Why does the element silicon, not form a graphite like structure whereas carbon does.
Answer» In graphite, carbon is sp² -hybridised and each carbon is linked to three other carbon atoms by forming hexagonal rings. Each carbon is now left with one unhybridised p-orbital which undergoes sideways overlap to form three p-p double bonds. Thus, graphite has twodimensional sheet like (layered) structure consisting of a number of benzene rings fused together. Silicon, on the other hand, does not form an analogue of carbon because of the following reason: Due to bigger size and smaller electronegativity of Si than C, it does not undergo sp² - hybridisation and hence it does not form p-p double bonds needed for graphite like structure. Instead, it prefers to undergo only sp³ -hybridisation and hence silicon has diamond like three ‐ dimensional network

Explain the following :Why does the element silicon, not form a graphite like structure whereas carbon does.

Answer»

In graphite, carbon is sp² -hybridised and each carbon is linked to three other carbon atoms by forming hexagonal rings. Each carbon is now left with one unhybridised p-orbital which undergoes sideways overlap to form three p-p double bonds. Thus, graphite has twodimensional sheet like (layered) structure consisting of a number of benzene rings fused together. Silicon, on the other hand, does not form an analogue of carbon because of the following reason:

Due to bigger size and smaller electronegativity of Si than C, it does not undergo sp² - hybridisation and hence it does not form p-p double bonds needed for graphite like structure. Instead, it prefers to undergo only sp³ -hybridisation and hence silicon has diamond like three ‐ dimensional network

Discussion

No Comment Found

Related InterviewSolutions

What were the two main occupations of the Rig Vedic Aryans?
Name the two political institutions which exercised check on the powers of the King in the Rig Vedic period.
What w’as the position of women in the Rig Vedic age ?
Describe the social life of the Rig Vedic Aryans with reference to the following: (a) The Family Structure (b) Position of Women (c) Varna System
With reference to the following explain the main features of the Rig Vedic Economy: (a) Agriculture (b) Domestication of Animals (c) Trade Transactions, Crafts and Transportation
Mention any two archaeological sources to reconstruct the later Vedic Age.
Mention any two of the Ashrams in the life of a man in Aryan society.
What information do we gather from the later Vedic literature in respect of: (a) Spread of Vedic Civilization to many New Regions. (b) Role of Iron in later Vedic Economy.
Mention briefly the rituals and sacrifices of the later Vedic Aryans?
What is the message of the Bhagavad Gita?