(chemistry) a periodic table

boron

to show, to make apparent / to express, to put into words / to signify, to represent, to symbolize, to stand for

to express, to say in words, to put into words

period of time, cycle

location, position

to be located; to be positioned; to be situated

(chemistry) element, chemical element

symbol, mark

surface; face (visible side of an object) / front (of a building), obverse side of a coin ("heads") / cover attached to a surface / outer clothing / facade; appearance; outside; exterior