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प्रश्न
What is electron affinity?
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उत्तर
Electron affinity is the energy released when an electron is added to an isolated gaseous atom to form the negative ion (anion).
Unit: Its units are electron volt (eV).
Its SI units are Kilojoules per mole (KJmol-1).
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संबंधित प्रश्न
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.
Explain the following:
Halogens have a high electron affinity.
Explain the following:
The reducing power of element increases down in the group while decreases in a period.
Explain
Halogens have high electron affinity.
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Electron affinity increases going down a group.
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The electron affinity of elements in groups 1 to 7:
Neon shows zero electron affinity due to ______.
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.
