Chemistry - Complete P-block Question with Solution | TestHub
Choose the correct statements about the hydrides of groupelements.
A. The stability of the hydrides decreases in the order
B. The reducing ability of the hydrides increases in the order
C. Among the hydrides,is strong reducing agent whileis mild reducing agent.
D. The basicity of the hydrides increases in the order
Choose the most appropriate from the option given below:
Options:
Answer:
Solution:
On moving down the group from , the atomic size increases. Consequently, the electron density on the central atom decreases and the basic strength decreases.
With an increase in size, the bond becomes weaker, hence, the thermal stability decreases down the group.
The highest bond length will have less bond energy, indicating that it is a strong reducing agent.
On moving down the group, bond strength of M–H bond decreases, which reduces the thermal stability but increases reducing nature of hydrides,
Hence and are correct statements.