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प्रश्न
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.
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उत्तर
| Element | Atomic number | No. of electrons in the valence shell | Group to which the element belongs |
| A | Z - 1 | 7 | 17 |
| B | Z | ||
| C | Z + 1 |
Both A and C need one electron to get a stable configuration.
Since A belongs to group 17 while C belongs group 1, so size of atoms of A is greater than that of C hence Electron affinity of element A is more than that of element C.
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संबंधित प्रश्न
The energy released when an electron is added to a neutral gaseous isolated atom to form a negatively charged iron.
Define the term ‘electron affinity’.
State the factors on which electron affinity depends ?
Electron affinity values generally _______ across the periods left to right and ______ down the group top to bottom.
Explain the following:
Halogens have a high electron affinity.
Which has higher E.A. fluorine or Neon?
State whether the following statement is true or false
The elements with higher electron affinity have higher ionization potential.
Down the group, electron affinity ______.
On descending a group, ______ in ionisation potential as well as electron affinity ______ oxidising capacity.
Arrange the following as per instruction given in the bracket.
Cl, F, Br, I (increasing electron affinity)
