Answer:
a. Halogen = an atom of Fluorine with chemical symbol F.
b. Alkali metal = an atom of Sodium with chemical symbol Na.
c. Noble gas = an atom of Argon with chemical symbol Ar.
d. Transition element = an atom of Copper with chemical symbol Cu.
e. Non metals = an atom of Oxygen with chemical symbol O.
Explanation:
a. Halogens are the family of chemical elements found in the group VIIA of the periodic table which means they possess seven (7) outer electrons e.g Fluorine (F), Chlorine (Cl).
b. Alkali metals are any of the monovalent elements found in Group IA of the periodic table. They readily lose their one valence electron to form ionic compounds with nonmetals. Examples of alkali metal are Lithium (L), Sodium (Na).
c. Noble gas are the gaseous elements occupying the group 0 of the periodic table e.g Neon Ne, Argon Ar.
d. A transition metal is one which forms one or more stable ions which have incompletely filled d orbitals e.g Scandium Sc, Copper Cu.
e. Non metals are elements that generally lacks metallic characteristic properties. They usually have high ionization energy and electronegativity e.g Carbon C, Oxygen O.
Explanation:
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