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प्रश्न
What is the difference between ionic compounds and polar covalent compounds?
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उत्तर
Ionic compound:
- They usually have high melting points and boiling points.
- They are soluble in water. (NaCl)
- They often conduct electricity in a molten state.
- They are usually crystalline solids.
Polar covalent compound:
- Atoms do not have an equal distribution of shared electron pairs.
- They ionise in water.
- They are not electrically neutral.
- Bond is formed between dissimilar atoms such as H2O, NH3, HCl.
संबंधित प्रश्न
State one test by which sodium chloride can be distinguished from sugar.
Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of oxygen, O2, is formed from two oxygen atoms. What name is given to this type of bonding? (At. No. of oxygen = 8)
Give the formulae of the chlorides of the elements X and Y having atomic numbers of 3 and 6 respectively. Will the properties of the two chlorides be similar or different? Explain your answer.
For each compound mentioned above give the formulae of ions formed in aqueous solution.
Draw the electron dot diagram and structure of magnesium chloride.
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
Name gas with a rotten egg smell.
Fill in the blank and rewrite the completed statement:
Covalent compounds are generally soluble in _________ solvents.
Write a short note.
Aromatic hydrocarbons
Write notes on the characteristics of covalent compounds.
