Why do some molecules (like water) form polar bonds and others like carbon dioxide do not?

Answer 1

This is electronegativity

Electronegativity refers to how an element holds electrons in a bond. Elements like Fluorine and Chlorine are much more electronegative than others. When put into bonds these elements tend to hold on to electrons more. Kind of like a ball hog in sports. The oxygen holds more electorns so it must be calculated how far apart they will be. keep in mind that the space around the molecule is 3D. In water you get the bent shape because it is the farthest apart all of the electrons can be.
The triangle on the bottom hydrogen represents the atom being pushed out at the view.

Carbon dioxide on the other hand has two electronegative molecules pulling the plane even. This is because on each side the oxygens are hogging the electrons and they already separated the most that they can be. this draws a singe axis that all of the atoms follow.

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Answer 2

The polarity of a molecule depends on the electronegativity difference between its constituent atoms. In water, oxygen is significantly more electronegative than hydrogen, creating a polar covalent bond. In carbon dioxide, the electronegativity difference between carbon and oxygen is less pronounced, resulting in nonpolar covalent bonds.

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Answer 3

Some molecules, like water, form polar bonds because they consist of atoms with significantly different electronegativities. In water, oxygen is much more electronegative than hydrogen, causing the electrons in the O-H bonds to be unequally shared, with a partial negative charge on the oxygen atom and partial positive charges on the hydrogen atoms. This results in a polar molecule.

On the other hand, molecules like carbon dioxide do not form polar bonds because the atoms involved have similar electronegativities. In carbon dioxide, carbon and oxygen have comparable electronegativities, so the electrons in the C=O bonds are shared more equally, resulting in a nonpolar molecule.

In summary, polar bonds form when there is a significant difference in electronegativity between atoms, leading to an unequal sharing of electrons and the creation of partial charges. Nonpolar bonds occur when atoms have similar electronegativities, resulting in equal sharing of electrons and no net dipole moment in the molecule.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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