The Word Isotopes Describes Elements That Have

question 81

Multiple Choice

The word isotopes describes elements that have

• A)the same atomic number but different atomic mass.
• B)the same atomic mass but different atomic number.
• C)the same atomic mass and the same atomic number but different chemical properties.
• D)similar chemical properties,though they differ in both atomic mass and atomic number.
• E)the same number of valence electrons.

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Definitions:

Nucleus

The membrane-bound organelle found in eukaryotic cells that contains most of the cell's genetic material.

Electrons

Subatomic particles with a negative charge, orbiting the nucleus of an atom.

PET Scan

A medical imaging technique that helps reveal how tissues and organs are functioning by using a radioactive substance called a tracer.

Radioactive Sugar

Sugars labeled with a radioactive isotope, used in scientific research to trace and study metabolic processes.