Understanding the Periodic Table

First-Row Opposites: Hydrogen and Helium (1x7)

: 09, 2021

Shifting gears, spend some time on the first and smallest row of the periodic table. Consider some important questions: What do two of the oldest, lightest elements—hydrogen and heli-um—have in common? How do they differ? And would they make sense somewhere else on the periodic table, given their particular characteristics and behaviors?