Why do atoms share electrons in covalent bonds?

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Question:
Why do atoms share electrons in covalent bonds?

1.To increase their atomic numbers

2. To attain a noble-gas electron configuration

3. To become more polar

4.To become ions and attract each other

Posted Date:-2022-01-12 08:08:53

More MCQS Questions and answers

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  3. Brine is an:
  4. Covalent bond is formed between :
  5. During ionisation metals lose electrons, this change can be called
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  7. Hydroxide of this metal is soluble in sodium hydroxide solution :
  8. Identify the element belonging to third period and 17th group of the periodic table.
  9. Identify the weak electrolyte from the following
  10. If two compounds have the same empirical formula but different molecular formulae, they must have :
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  13. Ionic bond is present in which of the following species:
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  16. Select the element in period 3 whose electron affinity is zero :
  17. The formula which expresses the actual number of each kind of atom present in the molecule of a compound is called:
  18. The formula which gives the simple ratio of each kind of atoms present in the molecule of a compound is called :
  19. The hydroxide which is soluble in excess of NaOH is:
  20. The metallic electrode which does not take part in an electrolytic reaction? (Inert electrode)
  21. The molecule containing a triple covalent bond is
  22. The one which is composed of all the three kinds of bond (ionic; covalent and coordinate bond) is:
  23. The particles present in strong electrolytes are:
  24. The precipitate of which of the following compounds is soluble in excess of ammonia solution?
  25. The starting material which takes part in chemical reaction is called:
  26. The type of bonding in HCl molecule is :
  27. What happens when a solution of an acid is mixed with a solution of a base in a test tube?
  28. What indicates the actual number of constituent atoms in a molecule?
  29. What is formed when zinc reacts with sodium hydroxide?
  30. What is the electronic configuration of Li ?
  31. When dilute sodium chloride is electrolysed using graphite electrodes, which cation is discharged at the cathode most readily?
  32. When two compounds R and S have same percentage composition. Then the compounds R and S are:
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  34. Which of the following is the atomic number of a elemerit that tKTs basic oxide?
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  36. Which one of the following salt solutions on reaction with excess of ammonium hydroxide solution results finally in dissolution of the precipitate first formed ?
  37. Which one of the following salt solutions on reaction with excess sodium hydroxide solution gives a clear solution finally ?
  38. Which one of the following salts does not contain water of crystallisation?
  39. Why do atoms share electrons in covalent bonds?
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