Heavy hydrogen.
The first hint to crack the puzzle «Heavy hydrogen.» is:
It is a word which contains 9 letters
The second hint to crack the puzzle «Heavy hydrogen.» is:
It starts with letter D
D
The third hint to crack the puzzle «Heavy hydrogen.» is:
It ends with letter M
D
m
Looking for extra hints for the puzzle «Heavy hydrogen.»:
Click on any empty tile to reveal a letter
D
m
The answer for the puzzle «Heavy hydrogen.» is:
D
e
u
t
e
r
i
u
m