Electronegativity difference >1.5 but <2

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Norman Dis4C
Posts: 101
Joined: Sat Sep 28, 2019 12:16 am

Electronegativity difference >1.5 but <2

Postby Norman Dis4C » Sat Nov 02, 2019 4:06 pm

Molecules with electronegativity difference >1.5 but <2 are considered ionic or covalent?

Sofia Q
Posts: 49
Joined: Sat Aug 17, 2019 12:15 am

Re: Electronegativity difference >1.5 but <2

Postby Sofia Q » Sat Nov 02, 2019 4:27 pm

There is an a cut out rule that says what compounds in between these ranges are, experimenting with the compound would be needed.

A type of test we talked about in class is solubility in water. Salts, another term for ionic compounds, will completely dissolve in water, but as the covalent character of ionic compounds increases, they will leave behind different amounts sitting at the bottom, not interacting with the polarity of water.

Haley Dveirin 1E
Posts: 101
Joined: Sat Jul 20, 2019 12:17 am

Re: Electronegativity difference >1.5 but <2

Postby Haley Dveirin 1E » Sat Nov 02, 2019 4:38 pm

If the electronegativity difference is between 1.5 and 2 then you can't say whether it is covalent or ionic.

Catherine Daye 1L
Posts: 104
Joined: Wed Sep 11, 2019 12:16 am

Re: Electronegativity difference >1.5 but <2

Postby Catherine Daye 1L » Sat Nov 02, 2019 4:49 pm

This doesn't really answer the question, but it's interesting to note that this also demonstrates how some ionic bonds demonstrate a more covalent character than others. If one bond has a really high electronegativity difference, it demonstrates less covalent character than one that has an electronegativity difference slightly over 2.

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