valency
🇺🇸
/ˈveɪlənsi/
🇬🇧
/ˈveɪlənsi/
The number that tells how many hydrogen atoms an atom can link with or replace in a chemical reaction.
The valency of oxygen is usually -2, which means it often combines with two hydrogen atoms.
氧的價數通常為-2,這意味著它通常和兩個氫原子結合。
The number of words a verb needs to work correctly in a sentence.
The verb 'give' has a valency of two, as in 'She gave him a book.'
動詞 'give' 的價數為二,正如 '她給了他一本書。' 中所示。