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प्रश्न
Name the element whose one of the allotropic forms is buckminsterfullerene.
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उत्तर
Carbon has buckminsterfullerene as one of its allotropes.
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संबंधित प्रश्न
Ethane, with the molecular formula C2H6 has ______.
State whether the following statement is true or false:
Diamond and graphite are the covalent compounds of carbon element (C)
Name the hardest natural substance known.
What type of bonds are present in water molecule? Draw the electron-dot structure of water (H2O).
Explain why covalent compounds have generally high melting points?
Give two general properties of ionic compounds and two those of covalent compounds.
What type of bonding would you expect between Carbon and Chlorine?
A covalent molecule having a double bond between its atoms is:
(a) Hydrogen
(b) Oxygen
(c) water
(d) ammonia
Match the pairs.
| Group 'A' | Group 'B' |
| a. C2H6 | 1. Unsaturated hydrocarbon |
| b. C2H2 | 2. Molecular formula of an alcohol |
| c. CH4O | 3. Saturated hydrocarbon |
| d. C3H6 | 4. Triple bond |
Explain the following:
Covalent compounds have low melting and boiling point.
Electrons are getting added to an element Y:
which electrode will Y migrate to during the process of electrolysis?
Draw the electron dot diagram and structure of nitrogen molecule.
Draw the electron dot diagram and structure of methane.
Answer the following question.
What is methane? Draw its electron dot structure. Name the type of bonds formed in this compound. Why are such compounds:
(i) poor conductors of electricity? and
(ii) have low melting and boiling points? What happens when this compound burns in oxygen?
Your body is made up of carbon.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Give an example for each of the following statement
A compound in which two Covalent bonds are formed.
Consider the coordination compound, K2[Cu(CN)4]. A coordinate covalent bond exists between:
Write notes on the characteristics of covalent compounds.
