The Symbol for a Certain Isotope of Strontium Is $\begin{array} { l } 90 \\38\end{array}$

question 134

Multiple Choice

The symbol for a certain isotope of strontium is $\begin{array} { l } 90 \\38\end{array}$ Sr. What is the mass number of this isotope?

• A)38
• B)52
• C)88
• D)90
• E)128

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Definitions:

Dependence

A condition in which a drug becomes incorporated into the functioning of the body’s cells so that it is needed for “normal” functioning.

Fetal Alcohol Syndrome

A condition resulting from alcohol exposure during the mother's pregnancy, causing brain damage and growth problems in the child.

Fertility

The natural capability to produce offspring, a significant factor in determining the likelihood of reproduction.

Direct Hazard

Pertains to a straightforward risk that arises from a specific source or activity, causing immediate harm or danger to health or safety.