Question

What is a covalent bond in which electrons are shared equally called?

Answer 1

You share valence electrons in a covalent bond, and if they're shared perfectly equally, it's a 100% covalent bond. If they're not, it's partially ionic.

Basically, when comparing covalent with ionic bonds, you have a spectrum:

• 100% ionic - no sharing of electrons at all.
• Mostly ionic, partially covalent - some sharing of electrons, primarily skewed towards one atom.
• Mostly covalent, partially ionic - significant sharing of electrons, only slightly skewed towards one atom.
• 100% covalent - exactly even sharing of electrons.

So yeah, 100% covalent bonds, or ideal covalent bonds, have equally-shared electrons.