Element Number 1 in the Periodic Table

This page is the CodyCross answer for the clue below from Brazilian Tour, Group 779, Puzzle 3 (Fernando De Noronha).

Question is: Element Number 1 in the Periodic Table

and the answer is: HYDROGEN

Word Meaning:

HYDROGEN — (uncountable) The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.

Definitions from Wiktionary.

Element Number 1 In The Periodic Table - Brazilian Tour CodyCross Answers | CodyCross Solutions