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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:
Methane
[H = 1, C = 6, Mg = 12, Cl = 17]
Explain the following:
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
An element in period 3, whose electron affinity is zero:
Why is the electron affinity of fluorine less than chlorine?
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.
Fill in the blank
The nature of oxide Al2O3 is ____
Down the group, electron affinity ______.
On descending a group, ______ in ionisation potential as well as electron affinity ______ oxidising capacity.
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?
