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IE(1) and IE(2) of Mg are 178 and 348 kc...

`IE_(1)` and `IE_(2)` of `Mg` are `178` and `348 kcal mol^(-1)`. The energy required for the reaction `Mg rarr Mg^(2+)+2e^(-)` is

A

`+170kcal`

B

`+526kcal`

C

`-170kcal`

D

`-526kcal`

Text Solution

Verified by Experts

The correct Answer is:
B
`IE = IE_1 + IE_2`
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VMC MODULES ENGLISH-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -LEVEL -2
  1. Which of the following statements are correct?

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  2. Which of the following is the wrong statement?

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  3. IE(1) and IE(2) of Mg are 178 and 348 kcal mol^(-1). The energy requir...

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  4. X((g)) to X((g))^(+) +e^(-), " "DeltaH=+720kJ" "mol^(-1) C...

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  5. Consider the following changes :- M((s)rarrM((g))" ""....."(a) ...

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  6. Consider the following values of I.E.(eV) for elements W and X: {:("...

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  7. Which is the correct order of ionization energies?

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  8. Which of the following statements is incorrect?

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  9. First ionization energy is highest for :

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  10. The incorrect statement among the following

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  11. The correct values of ionization enthalpies(in KJ "mol"^(-1)) of Si, P...

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  12. The third ionization enthalpy is maximum for

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  13. Consider the following ionisation reactions: If monovalent positi...

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  14. The incorrect statement is:

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  15. First three ionisation energies (in kJ/mol) of three representative el...

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  16. Which of the following statement is correct regarding following proces...

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  17. The correct order of increasing electron affinity of the following ele...

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  18. The second electron gain enthalpies (in kJ mol^(-1)) of oxygen and sul...

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  19. Which of the following statements is correct?

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  20. Which one of the following statements is incorrect?

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