zeetsubou: ZnT Week - Day 1: Fluoride Nine’s Day Fluoride is the most electronegative and reactive of all elements. It is a pale yellow, corrosive gas, which reacts with practically all organic and inorganic substances.
tags: Watashi Wa Otaku Desu,
from: https://watashi-wa-otaku-desu.tumblr.com/post/110627881292