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The first ionization enthalpy (Delta(i)H...

The first ionization enthalpy `(Delta_(i)H)` values of the third period elements, Na, Mg and Si are respectively 496, 737 and 786 kJ/mol. Predict whether the first `Delta_(i)H` value for Al will be more close to 575 or 760 kJ/mol. Justify your answer.

A

575

B

760

C

390

D

1120

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The correct Answer is:
A
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ALLEN-Periodic Table -All Questions
  1. The incorrect statement among the following is

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  2. Ionisation energy depends upon:

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  3. The first ionization enthalpy (Delta(i)H) values of the third period e...

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  4. Which one of the following statements is incorrect in relation to ioni...

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  5. The IE1, IE2, IE3, IE4 and IE5 of an element are 7.1, 14.3, 34.5, 46....

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  6. Which of the following processes requires maximum energy

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  7. To which of the following atom, the attachment of electron is most dif...

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  8. The element having very high ionization enthalpy but zero electron aff...

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  9. Which of the following statement is correct regarding following specie...

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  10. Select equation having endothermic step:

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  11. The electron affinity of

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  12. An atom with high electronegativity generally has

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  13. Assertion :- Cr belong to 4th period Reason :- Cr atom contain 4 sh...

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  14. Assertion :- First electrons affinity fo all element is positive. Re...

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  15. Assertion: The first ionization energy of Be is greater than that of B...

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  16. Assertion:- Mg^(2+) is smaller atomic size then F^(-) Resaon :- Mg...

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  17. Assertion: Helium has the highest value.of ionisation energy among all...

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  18. Assertion :- Metallic character increases on going down the group R...

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  19. Assertion :-HCl is more polar than HF. Reason :- Cl has more E.N. t...

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  20. Complete the following reaction

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