氘 气 + 丿 + 丨 气 Part qì steam 丿 Part piě line 丨 Part gǔn (same as 〡 hangzhou numeral one) number one Appears in characters like: 氧 氪 氯 氢 氨 氮 氟 汽 氦 氩 氡 氚 氖 氛 忾 氙 氰 氕 氘 氜 氝 氠 氥 芞