How Many Valence Electrons Does Gallium (Ga,atomic No

question 139

Multiple Choice

How many valence electrons does gallium (Ga,atomic no.= 31) have?

• A)1
• B)6
• C)3
• D)31
• E)70

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Definitions:

Protein Anions

Negatively charged proteins that play various roles in cellular functions, including maintaining cell structure and function.

Cell Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, controlling the passage of substances in and out.

Concentration Gradient

The variation in the distribution of molecules or ions across a space or membrane, which often dictates the direction of particles’ movement (e.g., high to low concentration).

High Concentration

A state or condition of having a large amount of substance in a certain volume or area, or the ability to focus intensely on a task or activity.