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प्रश्न
Explain the following:
Covalent compounds have low melting and boiling point.
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उत्तर
Covalent compounds have low melting and boiling point because the intermolecular forces of attraction among the molecules of covalent compounds are weak. Hence very small amount of heat energy is required to overcome the attraction between the molecules.
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संबंधित प्रश्न
Choose the correct answer from the options given below:
Which of the following is a common characteristic of a covalent compound?
1) high melting point
2) consists of molecules
3) always soluble in water
4) Conducts electricity when it is in the molten state
Fill in the blank in the following sentence:
The number of single covalent bonds in C2H2 molecule are ...........
What is the atomic number of carbon. Write its electronic configuration.
Explain the following:
polar covalent compounds electricity.
Observe the straight chain hydrocarbons given below and answer the following
questions :
i) Which of the straight chain compounds from A and B is saturated and unsaturated straight chains?
ii) Name these straight chains.
iii) Write their chemical formulae and number of – CH2 - units.
Give examples for the following:
Two liquid non polar compounds.
Draw the electron dot diagram and structure of nitrogen molecule.
Element A has 2 electrons in its M shell. Element B has atomic number 7.
If the compound formed between A and B is melted and an electric current is passed through the molten compound, the element A will be obtained at the ______ and B at the ______ of the electrolytic cell.
What is the difference between :
Ionic compounds and covalent compounds
When ethyl alcohol and acetic acid are mixed, the resulting ester has a chemical formula ______.
