Silicon Has Three Naturally Occurring Isotopes: Si-28 (Mass 28

question 12

Multiple Choice

Silicon has three naturally occurring isotopes: Si-28 (mass 28.0 amu) ; Si-29 (mass = 29.0 amu) and Si-30 (mass = 30.0 amu) . If the average atomic mass of silicon is 28.1 amu, which isotope is the most abundant?

• A)Si-29
• B)Si-28
• C)Si-30
• D)All isotopes have the same natural abundance.

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Definitions:

Seminal Fluid

The fluid that, together with spermatozoa, forms semen and provides nutrients and protection for sperm.

Interstitial Cells

Cells of the male reproductive system that secrete the androgens (such as testosterone).

Male Sex Hormones

Hormones, such as testosterone, that play pivotal roles in male development and reproductive functions.

Prostate

A gland in the male reproductive system that produces a fluid that is a component of semen, playing a role in both sexual health and fertility.