single bond; one pair of shared electrons
Tone colorsmāmámǎmàma
Meanings
1 sense · 5 examplesnoun
single bond; covalent bond formed by one shared electron pair
technicalA fundamental concept in chemistry representing the simplest covalent bond. It allows rotation between atoms, unlike double or triple bonds.
Zài在
jiǎ甲
wán烷
（
CH₄C
fènH
zǐ₄
）
zhōng分
tàn子
yuán中
，
zǐ碳
hé原
qīng子
yuán和
zǐ氢
zhī原
jiān子
shì之
dān间
jiàn是
单
键
。
In the methane (CH₄) molecule, the bonds between the carbon atom and the hydrogen atoms are single bonds.
Zhè这
ge个
huà化
xué学
jiàn键
shì是
dān单
jiàn键
，
bú不
shì是
shuāng双
jiàn键
。
This chemical bond is a single bond, not a double bond.
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Dān单
jiàn键
de的
jiàn键
néng能
tōng通
cháng常
bǐ比
shuāng双
jiàn键
ruò弱
。
The bond energy of a single bond is usually weaker than that of a double bond.
Lǎo老
shī师
yòng用
mó模
xíng型
zhǎn展
shì示
le了
tàn碳
qīng氢
dān单
jiàn键
de的
jié结
gòu构
。
The teacher used a model to show the structure of a carbon-hydrogen single bond.
Yǒu有
jī机
huà化
xué学
zhōng中
，
wán烷
tīng烃
fèn分
zǐ子
zhōng中
de的
tàn碳
tàn碳
jiàn键
dōu都
shì是
dān单
jiàn键
。
In organic chemistry, the carbon-carbon bonds in alkane molecules are all single bonds.