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Which of the following order is wrong-...

Which of the following order is wrong-

A

`NH_3 lt PH_3 lt AsH_3` - acidic nature

B

`Li^(+) lt Na^(+) lt K^(+) lt Cs^(+)` - ionic radius

C

`Al_2O_3 lt MgO lt Na_2O lt K_2O` - basic

D

`Li lt Be lt B lt C` - 1st ionisation potential

Text Solution

Verified by Experts

The correct Answer is:
D
The ionization potential of `C, B, Be and Li`
`C = 1s^2 , 2s^2 2p^2`

`[C gt Be gt B gt Li]`.
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ERRORLESS-CLASSFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -NCERT BASED QUESTIONS (Ionisation Energy)
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  2. The correct order of the second ionisation potential of carbon, nitrog...

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  3. The correct match of contents in Column I with those in Column II is

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  4. One electron species having ionization enegry of 54.4 eV is

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  5. Amongst the following elements whose electronic configuration are ...

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  6. The incorrect statement among the following is

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  7. The first ionization energy of oxygen is less than that of nitrogen. W...

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  8. Which of the following explanation is best for not placing hydrogen in...

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  9. Which of the following order is wrong-

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  10. Among the following transition elements, pick out the element/elements...

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  11. The decreasing order of the first ionization energy (in kJ mol^(-1)) o...

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

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  13. The correct decreasing order of first ionisation enthalpies of five el...

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  14. For one of the element various successive ionization enthalpies (in 1 ...

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  15. Which is the wrong order for the stated property ? .

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  16. The elements which occupy the peaks of ionisation energy curve are

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  17. The first (Delta(i)H(1)) and second (Delta(i)H(2)) ionization enthalpi...

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  18. Among halogens, the correct order of amount of energy released in elec...

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  19. The first ionization enthalpies for three elements are 1214, 1680 and ...

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  20. The electronic configuration of an element with the largest difference...

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