An Element Has a Weight of 131

question 73

Multiple Choice

An element has a weight of 131.3. The reason the number is not a whole number is that

• A) the atomic weight includes the weight of electrons.
• B) atomic weight is the average of the mass numbers of all the element's isotopes.
• C) the neutrons do not have a single unit weight.
• D) the atomic weight does not include the weight of protons.
• E) the number of electrons may vary.

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Definitions:

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Being quick to react or respond positively or effectively to some form of input or stimulation, such as a question, request, or change in environment.

Higher-income Families

Families with financial earnings substantially above the average, often associated with greater access to resources, education, and health care.

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The methods or plans put in place by parents or guardians to look after children, which can include daycare, nannies, or family care.

Lower Income Families

Refers to families living on earnings that fall below the median income level for their area, often facing financial challenges.