When is a bond polar?

Answer 1

maulo si uel

Answer 2

When two atoms are covalently bonded, the more elctronegative atom drags the shaired pair of electron towards itself, thus making the bond polar. The higher the polarity, the higher would be the reactivity of the molecule.

Answer 3

A polar covalent bond is one in which the electrons are not shared equally. This results in the more electronegative atom developing a partial negative charge, and the less electronegative atom developing a partial positive charge.

Answer 4

What does it mean when they say that a bond is polar?

Electronegativity Worksheet

A bond is formed when electrons are transferred or shared between 2 atoms

Electronegativity is used to determine the type of bond as shown above.

To determine percent ionic character uses this formula:

EN represents Electronegativity

You need an electronegativity table.

% Ionic character= ( Large EN - Small EN ) ÷ Large EN

Bond is nonpolar if % Ionic character = ( 0-5%)

Bond is polar covalent if % Ionic character = ( >5 % <50 )

Bond is ionic if % Ionic character = (% > 50 ) (Ionic are not polar)

Electronegativity measures the attraction an atom has for the pair of electrons forming the bond.

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If one atom has a larger electronegativity than the other atom such that % Ionic character is greater than 5% but less than 50% , the pair of bonding electrons will be attracted closer to the atom with the larger electronegativity. Since electrons have a negative charge, that end of the molecule will have a partial negative charge, and the opposite end will have a partial positive charge. Like poles of a magnet, but +,- not N,S.

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Example H.Cl,

Compound….EN-Left…EN-Right… %IC…. -end….+ end

…HCl………..2.2………3.16……….30%........Cl………H

….NH3………3.04………2.2………27.6%.......N……….H

…SO2………..2.58.……3.44……….25%..........O………S

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+H :Cl- Notice the 2 bonding electrons are closer to the Cl atom, so the Cl end has partial negative charge, and the opposite end will have a partial positive charge.

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Do a Google search for Ammonia molecule image and Sulfur dioxide image. You will see that the

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The sulfur dioxide molecule has is bent with the S atom on top of 2 O atoms, so the top of the molecule has a partial positive, and the bottom end will have a partial negative charge positive

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Ammonia molecule has the N atom on top of 3 H atoms, so the top of the molecule has a partial negative charge, and the bottom end will have a partial positive charge

This is a great way to see what molecules look like!!

Answer 5

Oh, of course! Or else they wouldn't be bonds at all! The polarity of a bond is how well or what it will bond with and how long it will taking for the bond to, well... bond with the other thing(s).

Answer 6

A covalent bond formed between 2 atoms of same element give us non polar covalent bond

Answer 7

A polar bond is when a molecule has a slightly positively charged end, and a slightly negatively charged end; there is unequal sharing.

Answer 8

A bond is polar when there is a partial charge or a full charge.

Answer 9

A polar bond is a covalent bond and valence electrons are shared unequally between two bonds. (Ex. Water atom)

Hope this helps! :)