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प्रश्न
Arrange the following in increasing order of property indicated
F, Cl, Br, I (electron affinity)
उत्तर
I < Br < F < Cl
Electron affinity decreases down the group due to increase in atomic size as it results in more distance between nucleus and last shell to which incoming electron enters. Hence, incoming electron feels less attraction from the nucleus.
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संबंधित प्रश्न
Draw an electron dot diagram to show the formation of each of the following compounds:
Magnesium Chloride
[H = 1, C = 6, Mg = 12, Cl = 17]
Define the term ‘electron affinity’.
Arrange the elements of second period in increasing order of their electron affinity. Name the elements which do not follow the trend in this period.
Electron affinity values generally _______ across the periods left to right and ______ down the group top to bottom.
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 element A is more than that that of element C.
Explain
Halogens have high electron affinity.
Among the Period 2 elements, the element which has high electron affinity is
The electron affinity of an element X is greater than that of element Y.
How is the oxidising power of X likely to compare with that of Y?
Among period 2 elements A, B, C and D, the one which has highest electron affinity is ______.
