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प्रश्न
Explain the following:
Halogens have a high electron affinity.
उत्तर
The atomic size of halogens is very small. The smaller the atomic size, the greater the electron affinity, because the effective attractive force between the nucleus and the valence electrons is greater in smaller atoms, and so the electrons are held firmly.
संबंधित प्रश्न
Arrange the following as per the instruction given in the brackets:
He, Ar, Ne (Increasing order of the number of electron shells)
Draw an electron dot diagram to show the formation of each of the following compounds:
Methane
[H = 1, C = 6, Mg = 12, Cl = 17]
Electron affinity values generally _______ across the periods left to right and ______ down the group top to bottom.
Give reason:
Electron affinity of halogens is comparatively high ?
An element in period 3, whose electron affinity is zero:
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.
Among period 2 elements A, B, C and D, the one which has highest electron affinity is ______.
State electron affinity unit.
