Assertion: fluorine's property | /r/CapableOf | increase down the group
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Source sentences:
text: Pnictogens (nitrogen's periodic table column) show very similar trends in reactivity and acidity of the highest fluorides (pentafluorides) and most common ones (trifluorides), with the said property increasing down the group: NF 3 is stable against hydrolysis, PF 3 hydrolyzes very slowly in moist air, while AsF 3 completely hydrolyzes.