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प्रश्न
Why is the electron affinity of fluorine less than chlorine?
Explain why:
Fluorine has lower electron affinity than chlorine.
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उत्तर १
Fluorine has lower electron affinity than chlorine because of the small size of fluorine, which results in stronger repulsion between the electron and the electrons already present in the atom of fluorine. Hence, the energy released in accepting an electron is lesser in fluorine than that of chlorine.
उत्तर २
- Fluorine has a very small atomic size, causing high electron density around its nucleus.
- This high electron density leads to strong repulsion for the incoming electron.
- As a result, fluorine does not accept the electron as easily as chlorine.
- Therefore, less energy is released when fluorine gains an electron, meaning lower electron affinity.
- Chlorine, with a larger size, can accommodate the electron more easily and thus has a higher electron affinity.
Notes
Students can refer to the provided solutions based on their preferred marks.
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संबंधित प्रश्न
Arrange the following as per the instruction given in the brackets:
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Magnesium Chloride
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The reducing power of element increases down in the group while decreases in a period.
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing electron affinity
A, B, C are three elements in which B is an inert gas other than helium.With this information complete the following table.
| Element | Atomic number | No. of electrons in the valence shell | Group to which the element belongs |
| A | Z - 1 | ||
| B | Z | ||
| C | Z + 1 |
Also, explain the following : Electron affinity of B is Zero.
Arrange the following in increasing order of property indicated
F, Cl, Br, I (electron affinity)
Explain
Halogens have high electron affinity.
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Electron affinity increases going down a group.
Down the group, electron affinity ______.
Arrange the following as per instruction given in the bracket.
Cl, F, Br, I (increasing electron affinity)
