Level 2
Level 1

+1價


6 words 0 ignored

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Ignore words

Check the boxes below to ignore/unignore words, then click save at the bottom. Ignored words will never appear in any learning session.

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Ignore?
H+
氫離子
Li+
鋰離子
Na+
鈉離子
K+
鉀離子
Ag+
銀離子
NH4+
銨根離子