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प्रश्न
Buckminsterfullerene is spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms.
How many pentagons of carbon atoms are present in one molecule of buckminsterfullerene?
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उत्तर
In one molecule of buckminsterfullerene, 12 pentagons of carbon atoms are present.
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संबंधित प्रश्न
Explain the formation of a chlorine molecule on the basis of electronic theory of valency.
Explain why covalent compounds have generally high melting points?
What type of bonding would you expect between Hydrogen and Chlorine?
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
The pencil leads are made of mainly:
(a) lithium
(b) charcoal
(c) lead
(d) graphite
Explain the following:
polar covalent compounds electricity.
State the type of bonding in the following molecule.
Methane
Draw electron - dot structure and structural formula of methane.
The electronic configuration of N2 is 2, 5. How many electrons in the outer shell of a N atom are not involved in the formation of a nitrogen molecule?
What is the term defined below?
A bond formed by a shared pair of electrons, each bonding atom contributing one electron to the pair.
Compare the compounds carbon tetrachloride and sodium chloride with regard to solubility in water and electrical conductivity.
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2,8,1 |
2,8,7 |
2,5 |
1 |
Answer the following questions based on the table above:
What type of bond is formed between Y and Z.
Which of the following is a common characteristic of a covalent compound?
Draw the electron dot structure of covalent compound methane (non polar) and HCL (polar) and give two difference between them.
Fill in the blank and rewrite the completed statement:
Covalent compounds are generally soluble in _________ solvents.
The bond between two oxygen atoms is _______ bond.
From the following hydrocarbon _______ is the cyclic hydrocarbon.
Write the molecular formula of the given compound.
Acetic acid
What is a covalent bond?
