Figure 14.5 and 14.6 show this division for a homonuclear and a heteronuclear diatomic molecule.
图14.5和14.6示出同核和异核双原子分子的这种分区。
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Heteronuclear molecule
Heteronuclear molecules, or heteronuclear species, are molecules composed of more than one type of element, for example, HCl.
In heteronuclear molecules e.g. HCl where bonded atoms are of different elements, the molecules become polar due to electronegativity difference.