If the Half-Life of an Element Is 12 Years

question 70

Multiple Choice

If the half-life of an element is 12 years. How much of a 5.00 g sample remains after 36 years?

• A) 2.50
• B) 1.25
• C) 0.625
• D) 0.313

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Definitions:

Building Block

A fundamental component or base element used for constructing larger structures or systems.

Isotope

Variants of a particular chemical element which differ in neutron number, and consequently in nucleon number, but share the same number of protons.

Subatomic Particles

Particles that are smaller than an atom, including protons, neutrons, and electrons, which make up the atoms' structure.

Protons

Positively charged particles found in the nucleus of an atom.