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Question
Fill in the blank
Energy released when electron is added to a neutral gaseous atom is called ______.
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Solution
Energy released when electron is added to a neutral gaseous atom is called Electron affinity.
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RELATED QUESTIONS
Draw an electron dot diagram to show the formation of the following compound:
Methane
[H = 1, C = 6]
Define the term ‘electron affinity’.
Electron affinity values generally _______ across the periods left to right and ______ down the group top to bottom.
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 of element C.
- lonization energy of element C is less than that of element A.
- Electron affinity of B is zero.
Explain
Halogens have high electron affinity.
Down a group, electron affinity ______ [increases, decreases, remains same].
State electron affinity unit.
