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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