Answer | Crossword Clue |
---|---|
XENON | It's under krypton on the periodic table |
NEON | It's under helium in the periodic table |
ARGON | Neighbor of krypton on the periodic table |
ARGON | Element under neon on the periodic table |
NEON | It's below helium on the periodic table |
NEON | It's next to fluorine on the periodic table |