Question

question if the following elements were involved in a chemical reaction, which one would be most likely to form a cation? responses potassium (k) chlorine (cl) fluorine (f) nitrogen (n)

Answer 1

Fluorine (F) would be least likely to form a cation out of potassium, fluorine, chlorine, and nitrogen.

• A cation is a positively charged atom (or molecule) that has lost electrons (or electrons).
• The tendency for electropositive elements to lose electrons and produce cations is greater. On the left side of the periodic table, these are often metals.
• Going down a group increases electropositivity, or the propensity to lose electrons and generate cations. and decreases across a period. In the given examples:
• Potassium, K is an alkali metal and will lose electrons readily to form a cation.
• Nitrogen (N), Fluorine (F), and chlorine (Cl) are all nonmetals that prefer to accept electrons and form anions instead. F is the most electronegative i.e. it will gain electrons and form F- rather than F+.

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