Question

8. Which of the following statements justifies why LiAlHs is a more powerful reducing agent than its isoelectronic counterpart NaBH4? i. NaH is a strong nucleophile, meaning the direct attachment of the hydride to li. The dipole moment of LiAIHs is higher than that of NaBHa, making its hydride ii. NaBHs is just as much of a strong reducing agent, with the ability to reduce a the sodium ion will make the hydride more nucleophilic like LiAIH more nucleophilic. nitrile to a primary amine. A. i. and ii. B. ii. and ii. C. i. only D. ii. only

Answer 1

option D correct ....LAH is powerful reducing agent than NaBH4 due to dipolemoment.... and Li ,Na if coordinated to carbonyl oxygen lithium acts stronger lewis acid and makes the carbonyl carbon electron deficient and hydride ions acts as strong nucleophiles than sodium....