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Periodic Proper...

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  • Question 1
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    In any period, the valency of an element with respect to oxygen

  • Question 2
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    In which of the following arrangements is the order NOT according to the property indicated against it?

  • Question 3
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    Which of the following has the largest size?

  • Question 4
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    Which of the following statements is correct?

  • Question 5
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    Among the elements of period III, the atomic size is the maximum for

  • Question 6
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    The correct order of ionisation energies is

  • Question 7
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    The first, second and third ionisation energies of an atom are 737, 1451 and 7733 kJ mol-1, respectively. The element can be

  • Question 8
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    Directions For Questions

    The successive ionisation energy values for an element 'X' are given below.

    (i) 1st ionisation energy = 410 kJ mol-1
    (ii) 2nd ionisation energy = 820 kJ mol-1
    (iii) 3rd ionisation energy = 1100 kJ mol-1
    (iv) 4th ionisation energy = 1500 kJ mol-1
    (v) 5th ionisation energy = 3200 kJ mol-1

    ...view full instructions

    Find out the number of valence electrons for an atom of 'X'.

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