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Grade: 12
        why bond length of hydrises decreases  down the group 15
one month ago

Answers : (2)

Arun
23386 Points
							
The stability of hydrides decreases from ammonia to bismuthine. This is because the central atom E increases in size down the group. With the increase in the size of the central atom, the E – H bond becomes weaker. where E is nitrogen ,phosphorus, arsenic,antimony , bismuth
one month ago
Vikas TU
9810 Points
							
Dear student 
As we move down the group, the size of the element increases and, therefore, the bond length of the M—H bond increases and its strength decreases.  Thus, BiH2 is least stable among the hydrides of group 15 and hence is the strongest reducing agent.
one month ago
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