Which of the Following Is Not Included with a Periodic

question 93

Multiple Choice

Which of the following is not included with a periodic table entry?

• A) atomic number
• B) mass number
• C) atomic weight
• D) symbol

---

Definitions:

Rapid Eye Movement Sleep

A sleep stage characterized by the rapid movement of the eyes, associated with vivid dreaming and increased brain activity.

EEG

Electroencephalogram, a test that measures electrical activity in the brain using small, flat metal discs attached to the scalp.

Antihistamines

Medications used to treat symptoms of allergies, such as sneezing, itching, and nasal congestion, by blocking the action of histamine.

Insomnia

A sleep disorder characterized by difficulty falling or staying asleep.