How Is the Term "Mass Number" Defined for a Given

question 79

Multiple Choice

How is the term "mass number" defined for a given atom or isotope?

• A) as the mass of one mole of that element or isotope
• B) as the sum of the number of protons, neutrons, and electrons
• C) as the sum of the number of protons and neutrons in the nucleus
• D) as the number of protons in the nucleus

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Definitions:

Critical Value

A threshold value used in hypothesis testing, which a test statistic must exceed to reject the null hypothesis.

Chi-squared Test

A chi-squared test is a statistical method used to assess the differences between observed and expected frequencies in one or more categories.

Expected Values

The long-term average or mean value of a random variable over numerous trials or occurrences.

Null Hypothesis

A default hypothesis that indicates no effect or no difference, and against which the alternative hypothesis is tested.