eka-protactinium
构词拆解
eka-
前缀
- eka-
- (chemistry) Used to form prototype names for as-yet undiscovered elements, when prepended to the known element above them in the same group of the periodic table.
词源说明
From eka- + protactinium.
释义
名词noun
- 1unbitrium (Ubt), an unsynthesized chemical element with atomic number 123.
- 2unquadunium (Uqu), an unsynthesized element with atomic number 141.