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Which of the following elements has posi...

Which of the following elements has positive `Delta_(eg)H`?
(i) `Mn` (ii) `Zn`
(iii) `Cd` (iv) `Hg`

A

`(i),(ii)`

B

`(i),(ii),(iii)`

C

`(i),(ii),(iii),(iv)`

D

`(ii),(iii),(iv)`

Text Solution

Verified by Experts

The correct Answer is:
C
All of the elements have stable electron configuration in the form of half-full or completely full subshells.
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R SHARMA-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN ELEMENTS-Follow-up Test
  1. Which of the halogens has the largest negative Delta(eg)H?

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  2. Which of the group 16 elements has the least negative Delta(eg)H?

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  3. Which of the following elements has positive Delta(eg)H? (i) Mn (ii)...

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  4. Which of the following elements has negative Delta(eg)H?

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  5. Which of the following numerical scales of electrongativity (EN) uses ...

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  6. Linus Pauling, an American scientist, assigned arbitrarily a value oft...

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  7. Which of the following elements is the least electronegative?

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  8. Which of the following elements do not follow the general trends? (i...

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  9. A1through the electronegativity scale is somewhat arbitrary we can use...

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  10. Which of the following compounds contains ionic bonds?

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  11. Which of the following is the most metallic element in the periodic ta...

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  12. Which of the elements exhibit only one valency in the combined state?

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  13. For p-block elements, the normal valence (or group valence is equal to...

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  14. The oxidation number of oxygen in H(2)O(2)is

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  15. Which of the following halogens exhibits only -1 oxidation number in i...

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  16. Which of the following elements cannot from strong p(pi)-p(pi) multipl...

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  17. Which of the following hydrides have unusally high boiling points on a...

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  18. Which of the following species does not exist?

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  19. Element Be shown diagonal relationship with

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  20. Which of the following oxides are amphoteric in nature?

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