Question

how is electronegativity related to covalent bonding?
atoms must have similar electronegativities in order to share electrons in a covalent bond.
atoms must have very different electronegativities in order to transfer electrons in a covalent bond.
atoms must have similar electronegativities in order to transfer electrons in a covalent bond.
atoms must have very different electronegativities in order to share electrons in a covalent bond.

Explanation:

共价键是原子间通过共用电子对形成的化学键。当原子的电负性相近时，它们更倾向于共用电子对，而不是得失电子形成离子键。电负性差异大的原子倾向于形成离子键，通过电子转移形成正负离子。

Answer:

Atoms must have similar electronegativities in order to share electrons in a covalent bond.