- 二 numeraltwothe number two; 2
- 氯 nounchlorinechlorine (element Cl); a toxic, yellow-green gas with a strong odor used for bleaching and disinfecting
- 异 異 adjectiveverbdifferent(bound form) different; not the same; diverse
- 三 numeralthreethe number three; 3
- poly-(bound form) used in chemistry to indicate a polymer
- cyanic acidan unstable, colorless, and poisonous liquid acid
- 钠 鈉 nounsodiumsodium; natrium (chemical element Na)