What Classification Is Given to the Elements Found in the a Groups

question 1

Multiple Choice

What classification is given to the elements found in the A Groups of the periodic table?

• A) representative or main-group
• B) transition
• C) lanthanide
• D) actinide

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Definitions:

Brainstem

The structure in the brain that connects the spinal cord to the forebrain and cerebrum, controlling vital functions such as breathing and heart rate.

CNS

Stands for Central Nervous System, which comprises the brain and spinal cord, serving as the primary processing center for the entire nervous system.

Arachnoid Granulations

Small protrusions of the arachnoid (the middle layer of the meninges) through the dura mater; they absorb cerebrospinal fluid into the venous system.

CSF

Cerebrospinal Fluid, a clear fluid found in the brain and spinal cord that cushions and protects the central nervous system.