Which of the Following Statements Regarding Nuclear Stability Is Incorrect

question 37

Multiple Choice

Which of the following statements regarding nuclear stability is incorrect?

• A)The N/Z ratio is about 1 for the first 20 elements.
• B)The N/Z ratio is about 1.6 for elements at the upper end of the band of stability.
• C)An N/Z ratio of 1 means that an element has an equal number of protons and electrons.
• D)Elements outside the band of stability are radioactive.
• E)All isotopes with Z greater than 83 are radioactive.

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Definitions:

CNS

The Central Nervous System (CNS) consists of the brain and spinal cord, responsible for processing information and controlling responses.

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the brainstem down the back, and transmits neural signals between the brain and the rest of the body.

Attentiveness

The state or quality of being attentively listening or watching; paying close attention to details.

Sleepiness

A state characterized by a decreased ability to remain awake, an increased propensity to fall asleep, and often a reduction in mental alertness and physical performance.