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प्रश्न
Arrange the following in increasing order of property indicated
F, Cl, Br, I (electron affinity)
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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
Arrange the following as per the instruction given in the brackets:
He, Ar, Ne (Increasing order of the number of electron shells)
Element X is a metal with a valency 2, Y is 3 non- metal with a valency 3.
1) Write an equation to show how Y from an ion.
2) If Y is a diatomic gas, write an equation for the direct combination of X and Y to form a compound.
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.
Explain the following:
Halogens have a high electron affinity.
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing electron affinity
Fill in the blank
Energy released when electron is added to a neutral gaseous atom is called ______.
Fill in the blank
Noble gases have ______ electron affinity.
In a period, increase in electron affinity increases ______.
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?
State electron affinity unit.
