Which Pair Has Approximately the Same Mass?
A) a Hydrogen ${ } _ { 1 } ^ { 1 } \mathrm { H }$

question 169

Multiple Choice

Which pair has approximately the same mass?

• A) A hydrogen ( \({ } _ { 1 } ^ { 1 } \mathrm { H }\) ) and a deuterium ( \({ } _ { 1 } ^ { 2 } \mathrm { H }\) ) atom
• B) A neutron and an electron
• C) A proton and a neutron
• D) An electron and a proton
• E) A hydrogen ( \({ } _ { 1 } ^ { 1 } H\) ) and a tritium ( \({ } _ { 1 } ^ { 3 } \mathrm { H }\) ) atom

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Definitions:

Pronation

A rotational movement of the forearm that turns the palm downward or backward.

Rotation

The act or process of turning around a center or an axis, a fundamental movement in biomechanics.

Gomphosis

A form of fibrous connection that secures a tooth within its jaw socket.

Syndesmosis

A type of fibrous joint in which bones are joined together by long collagen fibers, allowing for limited movement.