Ionic or covalent?

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Riya Sood 4G
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Ionic or covalent?

Postby Riya Sood 4G » Sun Nov 03, 2019 12:39 pm

How do we figure out if the compound is ionic or covalent without looking at the electronegativity?

KeyaV1C
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Re: Ionic or covalent?

Postby KeyaV1C » Sun Nov 03, 2019 1:30 pm

If a compound is made from a metal and a non-metal, its bonding will usually be ionic and if it’s made from two non-metals, its bonding should be covalent

Ashley Kim 3F
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Re: Ionic or covalent?

Postby Ashley Kim 3F » Sun Nov 03, 2019 2:07 pm

Usually, the elements at either end of the periodic table, when bonded together, form ionic bonds because it is easier for the electrons to be transferred due to the number of valence electrons they have. On the other hand, covalent bonds form between elements that cannot transfer electrons but instead share them.

preyasikumar_2L
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Re: Ionic or covalent?

Postby preyasikumar_2L » Sun Nov 03, 2019 3:25 pm

An ionic compound is usually made from a metal and a non-metal, and a covalent/molecular compound is usually made from two non-metals. Sometimes you can determine ionic or covalent bonds by how far apart horizontally the elements are placed on the periodic table - the farther they are suggests greater electronegativity difference which can suggest that the bond between them would be ionic, and vice versa.

Bryce Barbee
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Re: Ionic or covalent?

Postby Bryce Barbee » Sun Nov 03, 2019 3:26 pm

Ionic compounds are from metals and covalent are non metals.

Elizabeth Johnson 1I
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Re: Ionic or covalent?

Postby Elizabeth Johnson 1I » Sun Nov 03, 2019 11:17 pm

KeyaV3A wrote:If a compound is made from a metal and a non-metal, its bonding will usually be ionic and if it’s made from two non-metals, its bonding should be covalent


how do metalloids play into that, though?

Aadil Rehan 1D
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Re: Ionic or covalent?

Postby Aadil Rehan 1D » Sun Nov 03, 2019 11:36 pm

Elizabeth Johnson 1I wrote:
KeyaV3A wrote:If a compound is made from a metal and a non-metal, its bonding will usually be ionic and if it’s made from two non-metals, its bonding should be covalent


how do metalloids play into that, though?



good question, from what I've read metalloids have external properties of a metal (or can be induced to act as a metal) but have chemical properties of a non-metal, so they'd form covalent bonds. I'd bet that the bonds qualify as ionic if the electronegativity difference is great enough, though.

SVajragiri_1C
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Re: Ionic or covalent?

Postby SVajragiri_1C » Sun Nov 03, 2019 11:43 pm

Normally ionic bonds happen between elements far from each other on the periodic table, with a metal and nonmetal. Covalent bonds are everything else

Jillian C 4C
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Re: Ionic or covalent?

Postby Jillian C 4C » Mon Nov 04, 2019 12:09 am

Ionic compounds usually have charges and include metals with nonmetals, while covalent compounds are mostly nonmetals.

Leila_4G
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Re: Ionic or covalent?

Postby Leila_4G » Mon Nov 04, 2019 11:58 pm

Will we have to know the actual values of electronegativity to determine the minute differences? I assume probably not..

Amy Pham 1D
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Re: Ionic or covalent?

Postby Amy Pham 1D » Tue Nov 05, 2019 3:22 pm

Leila_4E wrote:Will we have to know the actual values of electronegativity to determine the minute differences? I assume probably not..


My TA informed us that if electronegativity differences were asked to be determined/we needed to determine if bonds were covalent or ionic in order to draw a Lewis structure, the electronegativity values for the elements in question would be provided for us on the exam.

Katie Bart 1I
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Re: Ionic or covalent?

Postby Katie Bart 1I » Wed Nov 06, 2019 4:56 pm

Can a bond have both covalent and ionic properties?

Jasmine Summers 4G
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Re: Ionic or covalent?

Postby Jasmine Summers 4G » Wed Nov 06, 2019 10:22 pm

A bond is ionic typically if the difference between 2 element's electronegativity is greater than 2, and a bond is covalent if the difference in electronegativity is less than 1.5. Many bonds however are partially ionic although they're still considered covalent. These bonds have dipole moments and one side of the compound is still more negative.

Megan_1F
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Re: Ionic or covalent?

Postby Megan_1F » Fri Nov 08, 2019 5:04 pm

A bond is normally ionic if the two atoms are on the far left and far right of the periodic table. Knowing the trends of the periodic table, one can assume that if two elements are near each other, they must have similar electronegativities, and thus would form a covalent bond.

Mariah
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Re: Ionic or covalent?

Postby Mariah » Fri Nov 08, 2019 5:07 pm

Leila_4E wrote:Will we have to know the actual values of electronegativity to determine the minute differences? I assume probably not..


I was told that we do not, but it might help when trying to figure it out. I think it just depends on your understanding.

ranqiao1e
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Re: Ionic or covalent?

Postby ranqiao1e » Fri Nov 08, 2019 6:19 pm

If it is a metal bonding to a nonmetal, it is ionic.

AGulati_4A
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Re: Ionic or covalent?

Postby AGulati_4A » Fri Nov 08, 2019 6:22 pm

If the compounds are very far apart on the periodic table then they are ionic, if they are close to each other they are covalent

stephaniekim2K
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Re: Ionic or covalent?

Postby stephaniekim2K » Sun Nov 10, 2019 8:57 pm

An ionic bond is typically comprised of a non metal and a metal while a covalent bond is usually two non metals.


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