Q. 604.8( 6 Votes )
A solid element X has four electrons in the outermost shell of its atom. An allotrope Y of this element is used as a dry lubricant in machinery and also in making pencil leads.
(a) What is element X?
(b) Name the allotrope Y?
(c) State whether allotrope Y is a good conductor or non-conductor of electricity.
(d) Name one use of allotrope Y (other than lubrication and pencil leads)
(e) Name two other allotropes of element X.
Answer :
(a) Element X is carbon.
(b) Allotrope Y is graphite.
(c) Allotrope Y is a good conductor of electricity (due to the presence of free electron).
(d) Allotrope Y is used for making electrodes of cells.
(e) Diamond and Buckministerfullerence are allotropes of element X.
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PREVIOUSThe number of carbon atoms joined in a spherical molecule of buckministerfullerence is:NEXTTwo organic compounds A and B have the same molecular formula C6H12. Write the names and structural formulae:
(a) if A is cyclic compound
(b) if B is an open chain compound
(c) Which compound contains single bonds as well as a double bond?
(d) Which compound contains only single bonds?
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