Which of the Following Do Not Function as Nucleophiles in Nucleophilic

question 169

Multiple Choice

Which of the following do not function as nucleophiles in nucleophilic substitution reactions?
1.H₂O
2.SH^-
3.CN^-
4.PH₃
5.CH₃CH₂O^-

• A) 1 and 4
• B) 2, 3, and 5
• C) 1, 2, and 4
• D) 5
• E) 4

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Definitions:

Circadian Rhythms

Physical, mental, and behavioral changes that follow a 24-hour cycle, responding primarily to light and darkness in an organism's environment, affecting sleep patterns among other bodily functions.

Biological Clock

An internal mechanism that regulates bodily rhythms and cycles, such as sleep and wakefulness, on a roughly 24-hour cycle.

Pineal Gland

A small endocrine gland in the brain that produces the hormone melatonin, which regulates sleep and wakefulness.

Melatonin

A hormone produced by the pineal gland that regulates sleep-wake cycles and is influenced by the presence of light.