- 微量元素 wēiliàngyuánsù trace elementtrace element (chemistry)
- 稀土元素 xītǔyuánsù rare earth elementrare earth element (chemistry)
- 化学元素 huàxuéyuánsù chemical element
- 稀有元素 xīyǒuyuánsù rare element(chemistry) rare element
- 重元素 zhòngyuánsù heavy elementheavy element (such as uranium)
- 轻元素 qīngyuánsù light elementlight element (such as hydrogen)
- 锕系元素 āxìyuánsù actinoidsactinoids (rare earth series), including actinium (Ac), thorium (Th), protactinium (Pa), uranium (U), neptunium (Np), plutonium (Pu), americium (Am), curium (Cm), berkelium (Bk), californium (Cf), einsteinium (Es), fermium (Fm), mendelevium (Md), nobelium (No), and lawrencium (Lr)
- 镧系元素 lánxìyuánsù lanthanideslanthanoid (rare earth series), comprising the 15 elements from lanthanum (57) to lutetium (71)
- 元素周期表 yuánsùzhōuqībiǎo periodic tableperiodic table of the elements (chemistry)
