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Which of the noble gases has the maximum...

Which of the noble gases has the maximum positive `Delta_(eg)H`?

A

`He`

B

`Ne`

C

`Ar`

D

`Kr`

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta_(eg)H` becomes less and less positive from `Ne` onwards on account of increase of atomic size. Unusulaly low positive `Delta_(eg)H` for `He` is related to its very small size which leads to relatively greater attraction towards the nucleus. The correct order of decreasing positive `Delta_(eg)H` is
`Negt Argt Kr gt Xegt Rn gt He`
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  1. Which of the following elements has the most negative electron gain en...

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  2. Which of these elements has a less favorable (more positive) Delta(eg)...

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  3. Which of the noble gases has the maximum positive Delta(eg)H?

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  4. Which of the halogens has the largest negative Delta(eg)H?

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

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

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

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

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

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

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

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

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  13. Which of the following compounds contains ionic bonds?

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

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

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

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

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

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

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

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