Important group names in the periodic table:
• Group 1 \(\rightarrow\) Alkali metals
• Group 2 \(\rightarrow\) Alkaline earth metals
• Group 16 \(\rightarrow\) Chalcogens
• Group 17 \(\rightarrow\) Halogens
• Group 18 \(\rightarrow\) Noble gases
Remember:
\[
\text{O, S, Se, Te} \rightarrow \text{Group 16}
\]
\[
\text{F, Cl, Br, I} \rightarrow \text{Group 17}
\]