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Electronegativity of an atom determines how it will share the electrons in a covalent bond. If an atom has a high electronegativity and it is bonded to an atom with a low one, the shared electrons will stay closer to the one with higher electronegativity. This molecule will be polar. If two atoms are bonded with similar electronegativities, the electrons will be shared evenly and it will be nonpolar. Nonpolar bonds are uncommon because there are many atoms with different electonegativities, so the chance that they are very close is low.
Basically kid, if you are using Holt Rinehart and Winston chapter test/quiz for covalent compounds, the answer is A) one atom usually attracts electrons more strongly than the other (varying electronegativities)
YAY!!
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoBecause some covalent bonds are formed between elements of exactly equal electronegativity and some other covalent bonds are formed between elements of different electronegativities, even though the difference is not large enough to form an ionic bond instead. The first group are nonpolar and the second group are polar.
Wiki User
∙ 13y agoWiki User
∙ 13y agoA polar bond forms when one atom is bonded to a more electronegative atom. Electronegativity. Atoms of the same element have the same electronegativity and so bonds between them are nonpolar.
Wiki User
∙ 11y agoBecause covalent bonds are generally between different elements, and they will have different electronegativities
Wiki User
∙ 11y agoNon polar covalent bonds can only occur between any two atoms of the same isotope in a non metal except in group 18.
Wiki User
∙ 13y agothey have more power to do stuff with
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What are covalent bonds used to form?
It is used to form molecules and various compounds. In fact, most of the bonds are covalent bonds.
Is a covalent bond neutral?
Molecules can be polar or non-polar; bonds are what hold molecules together, but they are not in themselves polar or non-polar. I should point out that the most famous polar molecule in the world, the water molecule, does have covalent bonds.
Why do covalent compounds dissolve in ethanol not in water?
The polar covalent compounds are easily soluble in water as HCl, HNO3, H2SO4, Glucose and most of the sugars, Sugar has many polar covalent bonds, in the C-O-H groups, and the molecules of sugar fit easily into the hydrogen bonded microstructure of liquid water.
What covalent bonds are most polar?
Bonds between two nonmetals that differ in electronegativity (EN) are usually polar. Electronegativity is the tendency of an atom to attract electrons. Nonmetals with EN differences of 0.5-1.6 form polar covalent bonds. The greater the difference, the more polar. If the EN difference is
Which compounds in the periodic table has the weakest bond?
In most cases, covalent bonds are usually weaker, but there are exceptions such as diamond and graphite.
Is CsBr covalent or ionic?
CsBr is both polar and ionic, but is not covalent.
What covalent bonds used to form?
It is used to form molecules and various compounds. In fact, most of the bonds are covalent bonds.
What are covalent bonds used to form?
It is used to form molecules and various compounds. In fact, most of the bonds are covalent bonds.
Why are covalent compounds soluble in water?
The polar covalent compounds are easily soluble in water as HCl, HNO3, H2SO4, Glucose and most of the sugars, Sugar has many polar covalent bonds, in the C-O-H groups, and the molecules of sugar fit easily into the hydrogen bonded microstructure of liquid water.
Is a covalent bond neutral?
Molecules can be polar or non-polar; bonds are what hold molecules together, but they are not in themselves polar or non-polar. I should point out that the most famous polar molecule in the world, the water molecule, does have covalent bonds.
Why do covalent compounds dissolve in ethanol not in water?
The polar covalent compounds are easily soluble in water as HCl, HNO3, H2SO4, Glucose and most of the sugars, Sugar has many polar covalent bonds, in the C-O-H groups, and the molecules of sugar fit easily into the hydrogen bonded microstructure of liquid water.
What covalent bonds are most polar?
Bonds between two nonmetals that differ in electronegativity (EN) are usually polar. Electronegativity is the tendency of an atom to attract electrons. Nonmetals with EN differences of 0.5-1.6 form polar covalent bonds. The greater the difference, the more polar. If the EN difference is
Is rubbing alcohol covalent or ionic?
Most Ionically bonded substances are solid, this makes me assume that Rubbing alcohol has covalent bonds.
Which compounds in the periodic table has the weakest bond?
In most cases, covalent bonds are usually weaker, but there are exceptions such as diamond and graphite.
What are examples of polar covalent compounds?
Acids are all polar covalent to some extent. Probably the most common polar covalent compound is water, H2O. Some other examples are ammonia, NH3, boron trifluoride, BF3, and hydrogen fluoride, HF. Basically, any two atoms with a percentage of ionic character (electronegativity difference) between 5% and 50% will form polar covalent bonds.
Which elements would most likely form non-polar covalent bonds?
H and H
What covalent bonds is the most polar with hydrogen Fluorine Carbon hydrogen or Nitrogen?
Fluorine and hydrogen
