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प्रश्न
विकल्प
True
False
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उत्तर
False.
Concept Insight: (i) There is inverse relation between atomic size and electron affinity. More is the size, less is the electron affinity and vice versa because more is the size of atom, more is the distance between the nucleus and last shell to which electron enters. This results in decrease in force of attraction between the nucleus and incoming electron and hence the electron affinity decreases. Fluorine has smaller size than chlorine so it must have less electron affinity than chlorine.
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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)
The energy released when an electron is added to a neutral gaseous isolated atom to form a negatively charged iron.
Explain the following:
The reducing power of element increases down in the group while decreases in a period.
An element in period 3, whose electron affinity is zero:
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.
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.
On descending a group, ______ in ionisation potential as well as electron affinity ______ oxidising capacity.
State electron affinity unit.
