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प्रश्न
Give one example of a molecule containing a double covalent bond
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उत्तर
A molecule containing a double covalent bond: oxygen molecule 
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संबंधित प्रश्न
State whether the following statement is true or false:
Diamond and graphite are the covalent compounds of carbon element (C)
What type of bonds are present in H2 molecule? Draw their electron-dot structures.
What type of bonds are present in CO2 molecule? Draw their electron-dot structures.
Fill in the following blank with suitable word:
The general formula CnH2n for cycloalkanes is the same as that of ...........
Explain why, ionic compounds conduct electricity in solution whereas covalent compounds do not conduct electricity.
Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of nitrogen, N2, is formed from two nitrogen atoms. What name is given to this type of bonding? (Atomic number of nitrogen is 7)
what substance is graphite made?
One of the following compounds is not ionic in nature. This compound is:
(a) Lithium chloride
(b) Ammonium chloride
(c) Calcium chloride
(d) Carbon tetrachloride
An element E exists in three allotropic forms A, B and C. In allotrope A, the atoms of element E are joined to form spherical molecules. In allotrope B, each atom of element E is surrounded by three other E atoms to form a sheet like structure. In allotrope C, each atom of element E is surrounded by four other E atoms to form a rigid structure.
(a) Name the element E.
(b) What is allotrope A.
(c) What is allotrope B?
(d) What is allotrope C?
(e) Which allotrope is used in making jewellery?
(f) Which allotrope is used in making anode of a dry cell?
Distinguish between ionic and covalent compounds under the following properties:
(i) Strength of forces between constituent elements
(ii) Solubility of compounds in water
(iii) Electrical conduction in substances
Electrons are getting added to an element Y:
Is Y getting oxidised or reduced?
Explain why carbon tetrachloride does not dissolve in water.
Potassium (Atomic No. 19) and chlorine (Atomic No. 17) react to form a compound. On the basis of electronic concept, explain
(i) oxidation
(ii) reduction
(iii)oxidising agent
(iv)reducing agent
Explain the following:
Polar covalent compounds conduct electricity?
The number of electrons in the valence shell of a carbon atom is 4.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
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Considering MgCl2 as ionic compound and CH4 as covalent compound give any two differences between these two compounds.
List two differences between the properties exhibited by covalent compounds and ionic compounds.
What is a covalent bond?
