Nonpolar covalent bonds are always formed from atoms that are __________.

• A. identical in electronegativity
• B. different in atomic radius
• C. metals
• D. opposite in charge

Answer: (A)

Verified step by step guidance

1. Understand that a nonpolar covalent bond occurs when two atoms share electrons equally.
2. Recall that electronegativity is a measure of an atom's ability to attract shared electrons in a bond.
3. Recognize that when two atoms have identical or very similar electronegativity values, the electrons are shared equally, resulting in a nonpolar covalent bond.
4. Note that differences in atomic radius, metallic character, or opposite charges typically lead to polar covalent or ionic bonds, not nonpolar covalent bonds.
5. Conclude that nonpolar covalent bonds are always formed between atoms that are identical in electronegativity.