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Which among the following elements have ...

Which among the following elements have the lowest value of `IE_(1)`?

A

`Pb`

B

`Sn`

C

`Si`

D

`C`

Text Solution

Verified by Experts

The correct Answer is:
B
The ionisation energy of tin `{Sn}` is less than that of lead (pb). It is due to the poor shielding of `d-` and `f-` electron in `Pb` due to which it feels greater attraction from nucleus.
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A2Z-CLASSIFICATION OF ELEMENTS AND PERIODICITY OF PROPERTIES-Ionisation Energy
  1. Which of the following has the highest first ionisation energy?

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  2. The first ionisation potential of Na,Mg,Al and Si are in the order

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  3. Which among the following elements have the lowest value of IE(1)?

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  4. Which of the following elements will have the lowest first ionisation ...

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  5. Fluorine is the best oxidising agent because it has

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  6. The ionisation energy of nitrogen is more than that of oxygen because

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  7. Which of correct about ionisation potential?

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  8. The formation of the oxide ion O(g)^(2-) requires first an exothermic ...

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  9. Mg and Li are similar in their properties due to

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  10. Maximum I.E. Is for

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  11. Order of first ionisation potentials of elements Li,Be,B, Na is

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  12. A sudden jump- between the values of second and third ionisation energ...

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  13. A neutral atom will have the lowest ionisation potential when its elec...

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  14. Which of the following is incorrect?

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  15. The process requiring the absorption of energy is

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  16. Which of the following sequence regarding the first ionisation potenti...

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  17. The element with highest value of ionisation potential is

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  18. In halogens, with increase of atomic number where habit is found

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  19. Which of the following transitions involves maximum amount of energy?

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  20. A rarr A^(+)+e,E(1) and A^(+) rarr A^(2+)+e,E(2). The energy required ...

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