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प्रश्न
Explain
Halogens have high electron affinity.
उत्तर
Halogens need only one electron to complete their octet and become stable their atomic size is very less hence the distance between their last shell and nucleus is very less, as a result the force of attraction between the nucleus and the incoming electron is less and hence the electron affinity is high for halogens.
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संबंधित प्रश्न
Arrange the following as per the instruction given in the brackets:
He, Ar, Ne (Increasing order of the number of electron shells)
Choose the correct answer from the options given below:
If an element A belongs to Period 3 and Group II, then it will have
A. 3 shells and 2 valence electrons
B. 2 shells and 3 valence electrons
C. 3 shells and 3 valence electrons
D. 2 shells and 2 valence electrons
Give one word or phrase for the following:
The amount of energy released when an atom in the gaseous state accepts an electron to form an anion.
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
F, B, N, O (In the increasing order of electron affinity)
Fill in the blank
Energy released when electron is added to a neutral gaseous atom is called ______.
Neon shows zero electron affinity due to ______.
Among period 2 elements A, B, C and D, the one which has highest electron affinity is ______.
