Question

the atoms in o=c=o (carbon dioxide) are held together by this type of bond, in which electrons are shared evenly:
o polar covalent
o ionic
o hydrogen
o non - polar covalent
question 7
1 pts
the hydrogen and oxygen atoms in water share electrons unequally, resulting in partially negative and partially positive

Explanation:

To determine the bond type in \( \text{O}=\text{C}=\text{O} \) (carbon dioxide) where electrons are shared evenly, we analyze each option:

• Polar covalent: Electrons are shared unequally, creating partial charges. This is not the case here.
• Ionic: Involves transfer of electrons (not sharing), so this is incorrect.
• Hydrogen: A special type of dipole - dipole interaction, not a bond type for \( \text{C}-\text{O} \) in \( \text{CO}_2 \).
• Non - polar covalent: In \( \text{CO}_2 \), the carbon - oxygen bonds are non - polar covalent because the electronegativity difference between C and O, when considered in the linear, symmetric structure of \( \text{CO}_2 \), results in an even sharing of electrons overall (the dipoles of the two \( \text{C}=\text{O} \) bonds cancel out, and the bond itself, in terms of electron sharing equality in the context of the molecule's symmetry, is non - polar covalent).

Answer:

D. non - polar covalent