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Which of the Following Is Not a Source of Risk

question 153

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Which of the following is not a source of risk?


Definitions:

Potassium

A soft, silvery-white metallic element, highly reactive and essential for biological organisms, symbolized as K.

Se

Selenium, a nonmetal element with properties that are intermediate between those of metals and nonmetals, used in various industrial applications.

Lewis Dot Structure

A representation of the valence electrons in an atom or molecule, illustrating the bonds between atoms and lone pairs of electrons.

Chlorine

A chemical element with symbol Cl and atomic number 17, known for its high reactivity and use as a disinfectant.

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