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Energy is absorbed when a second electro...

Energy is absorbed when a second electron is added to oxygen. This is because

A

`O^(-)` has stable configuration

B

`O^(-)` has repulsion with electron to be added

C

`O^(-)` has lower nuclear charge than O

D

`O^(2-)` has unstable configuration

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The correct Answer is:
B
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NARAYNA-PERIODIC TABLE -All Questions
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  2. Electron affinity values are obtained indirectly by

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  4. The decreasing order of electron affinity of halogen's is

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  5. The electron affinity values (in kJ mol^(-1)) of three halogens, x,y, ...

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  6. For univalent elements, the average value of first ionization potentia...

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  7. The reference element in Paulings scale of Electronegativity is

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  8. Electronegativity is the property related to

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  9. The values that are useful in writing chemical formulae and in calcula...

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  10. Let electronegativity, ionisation energy and electron affinity by repr...

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  11. In which group all the elements do not have same number of valence ele...

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  12. Metal exhibiting higher oxidation state is in which block ?

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  13. Among the following outermost configurations of transitionn metals, wh...

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  14. The less electropositive element is

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  15. Electropositivity is very high for

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  16. The most electropositive element is

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