What Happens to the Mass Number and the Atomic Number

question 63

Multiple Choice

What happens to the mass number and the atomic number of an element when it undergoes alpha decay?

• A)The mass number decreases by 4 and the atomic number decreases by 2.
• B)The mass number does not change and the atomic number increases by 1.
• C)The mass number increases by 4 and the atomic number does not change.
• D)The mass number increases by 2 and the atomic number decreases by 1.
• E)The mass number does not change and the atomic number increases by 2.

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Definitions:

Thalamus

A brain structure that acts as a relay station, processing and transmitting sensory information to the cerebral cortex.

Base of Skull

The bottom part of the skull, upon which the brain rests, consisting of several bones that form the cranial base and provide structural support.

Localization of Function

The concept that specific parts of the brain are responsible for specific psychological or physiological functions.

Phrenology

A now-discredited theory that suggested the shape and size of the skull could determine a person's personality and mental abilities.