How many protons,neutrons,and electrons are there in a neutral atom of 19/9 F? 
Definitions:
High School Years
The period of education that occurs during adolescence, typically covering grades 9 through 12 in the United States.
Identity
The qualities, beliefs, personality, looks, and/or expressions that make a person (self-identity) or group (particular social category or social group).
Primary Sex Characteristics
The physical features that are directly involved in reproduction, such as the ovaries in females and the testes in males.
Sexually Mature
A state of biological development at which an individual is capable of reproducing.
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