OZ
OZDIC
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h
mastery
UK /eɪt͡ʃ/
US [æɪt͡ʃ]
noun
adj
character
num
name
card 1 of 10
· fill in the blank
The chemical symbol for hydrogen is
_____
.
1.
h
2.
he
3.
hy
4.
hg
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