The Numbers Listed Represent the Number of Electrons in the First

question 45

Multiple Choice

The numbers listed represent the number of electrons in the first, second, and third energy levels, respectively. On this basis, which of the following is an unstable or reactive atom?

• A) 2, 8
• B) 2
• C) 2, 8, 1
• D) 2, 8, 8

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Definitions:

Sleep Patterns

The natural timing, duration, and quality of sleep, including cycles of REM and non-REM sleep, influenced by environmental factors, age, and health.

Circadian Cycles

Biological processes that occur within roughly a 24-hour cycle in living organisms, influencing sleep, hormone release, and other bodily functions.

Melatonin

A hormone produced by the pineal gland that regulates sleep-wake cycles.

Diurnal

Relating to or occurring during the day or in the daytime, often in contrast to nocturnal.