What Are the Horizontal Rows of the Periodic Table Called

question 27

Multiple Choice

What are the horizontal rows of the periodic table called?

• A) cycles
• B) periods
• C) families
• D) none of these

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Definitions:

Depression

A mental health disorder characterized by persistent feelings of sadness, loss, or anger that interfere with daily activities.

Substantia Nigra

A region of the midbrain that plays an important role in movement and coordination; it is notably affected in patients with Parkinson's disease.

Dopamine Levels

The concentration of dopamine, a neurotransmitter associated with pleasure and reward, within the brain.

Parkinson Disease

A neurodegenerative disorder characterized by motor symptoms such as tremor, rigidity, and bradykinesia, due to the loss of dopamine-producing cells in the brain.