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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
On decreasing internuclear distance below, the optimum distance (where potential  energy is minimum), there is steep increase in potential energy due to 
  • A
    Increase in force of attraction between electrons and nucleus
  • B
    Increase in stability of bonded atoms
  • C
    Equal probability of finding bonding electrons near to either of nuclei
  • ✓
    Increase in interelectronic and internuclear repulsions
✓

Answer

Correct option: D.
Increase in interelectronic and internuclear repulsions
d
As on decreasing internuclear distance due to these electrons comes closer to each other and also nucleus to nucleus closer so repulsion between both of them increases. The same charge will always repel each other so the answer is to increase in interelectronic and internuclear repulsion

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