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The first and second ionization enthalpi...

The first and second ionization enthalpies and electron gain enthalpy of some elements are as given below:

Which of the elements given above is the least reactive?

A

(C)

B

(D)

C

(E)

D

(F)

Text Solution

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The correct Answer is:
C
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VMC MODULES ENGLISH-PERIODIC PROPERTIES OF ELEMENTS-EFFICIENT
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  3. Which of these ions possesses the smallest radius?

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  4. An element with atomic number 64 will have the electronic configuratio...

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  5. Which of these is an incorrect statement?

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  6. The stability of ions of Ge Sn and Pb will be in the order .

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  7. Which of these chlorides will have the highest melting point?

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  8. Allred – Rochow’s electronegativity depends upon

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

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

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  11. The IE1 , IE2 , IE3 and IE4 of an element are 5.7, 11.03, 42.89, 57 e...

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  12. Among N, C, Si and P, which has highest electronegativity :

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  13. Calculate the electronegativity of fluorine from the following data: ...

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  14. Ionisation potential and electron affinity of fluorine are 17.42 and 3...

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  15. The elecron affinity of chlorine is 3. 7 eV. How much energy in kcal i...

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  16. If the covalent radius of silicon is 1.175 Å then its elec-tronegati...

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  17. Answer the following question (Based on EA, Delta(eg)H^(ɵ) and IE). I...

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  18. Property of the alkaline earth metals that increases down the group w...

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  19. The ionisation potentials of atoms A and B are 400 and 300 kcal mol^(-...

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  20. For the gaseous reaction K+F rarrK^(o+)+F^(ɵ) Delta H = 19 kcal mo...

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  21. How many Cl atoms can you ionise in the process ClrarrCl^(o+)+e^(-) by...

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