Question

1. give one elemental symbol for each of the following

______ a noble gas
______ an alkaline earth metal
______ an alkali metal
______ a halogen

Explanation:

Noble gases include helium (He), neon (Ne), etc. Alkaline - earth metals are in Group 2 of the periodic table, like calcium (Ca). Alkali metals are in Group 1, such as sodium (Na). Halogens are in Group 17, for example, chlorine (Cl).

Answer:

He
Ca
Na
Cl