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प्रश्न
You can buy solid air-freshners in shops. Do you think these substance are ionic or covalent? Why?
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उत्तर
These substances are covalent in nature because bonding between covalent substances are not as strong as ionic substances. So, covalent compounds hold together with weak forces and low melting point. This is why, they vapourise easily and give their odours. However, when ionic compounds comes in contact with air, they cannot give an odour by vapourising.
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संबंधित प्रश्न
Give reason why carbon compounds are generally poor conductors of electricity.
What type of bonds are present in water molecule? Draw the electron-dot structure of water (H2O).
Give one example, state what are covalent compounds?
Explain why, diamond has a high melting point.
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
An element A has 4 valence electrons in its atom whereas element B has only one valence electron in its atom. The compound formed by A and B does not conduct electricity. What is the nature of chemical bond in the compound formed? Give its electron-dot structure.
Complete the following:
In case of non-polar covalent bond, the covalent bond is formed in the ______ of atoms and shared electrons are ______ distributed. (corner, middle, equally, unequally)
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
Taking hydrogen chloride and methane as examples, distinguish between a polar covalent bond and a non polar covalent bond.
(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
The type of bonding in X will be
The particles present in strong electrolytes are
Draw an electron dot diagram to show the formation of the following compound.
Magnesium chloride [ H=1, C=6, Mg=12, Cl=17].
Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in?
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
Name two carbon compounds used in day-to-day life.
The bond between two oxygen atoms is _______ bond.
What is a covalent bond?
"Carbon prefers to share its valence electrons with other atoms of carbon or with atoms of other elements rather than gaining or losing the valence electrons in order to attain noble gas configuration." Give reasons to justify this statement.
The electron dot structure of chlorine molecule is:
