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प्रश्न
पर्याय
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
Define the term ‘electron affinity’.
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.
Give reason:
Electronegativity of chorine is higher than Sulphur?
Why is the electron affinity of fluorine less than chlorine?
A, B, C are three elements in which B is an inert gas other than helium.With this information complete the following table.
| Element | Atomic number | No. of electrons in the valence shell | Group to which the element belongs |
| A | Z - 1 | ||
| B | Z | ||
| C | Z + 1 |
Also, explain the following : Electron affinity of element A is more than that that of element C.
A, B, C are three elements in which B is an inert gas other than helium.With this information complete the following table.
| Element | Atomic number | No. of electrons in the valence shell | Group to which the element belongs |
| A | Z - 1 | ||
| B | Z | ||
| C | Z + 1 |
Also, explain the following : Electron affinity of B is Zero.
Fill in the blank
Noble gases have ______ electron affinity.
State whether the following statement is true or false
Al2O3 is an amphoteric oxide.
The following questions refer to the Periodic Table.
Which of the elements has the greatest electron affinity among the halogens?
The electron affinity of an element X is greater than that of element Y.
State whether X is likely to be placed to the left or to the right of Y in the periodic table.
