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प्रश्न
Write a scientific reason.
Atomic radius goes on increasing down a group.
Give scientific reasons:
Atomic radius goes on increasing down the ‘group’.
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उत्तर
- Atomic radius increases as we move from top to bottom in a group because a new shell of electrons is added to the atoms at every step.
- The number of electron shells increases gradually, due to which the size of the atoms increases.
- As the size of the atoms increases, it leads to an increase in the atomic radius.
- The distance between the nucleus and the outermost electrons increases, so the attractive force of the nucleus decreases.
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|
(i) |
(ii) |
|
(iii) |
(iv) |
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