2D.3

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Annie Ye
Posts: 106
Joined: Wed Sep 18, 2019 12:22 am

2D.3

Postby Annie Ye » Mon Dec 02, 2019 3:42 pm

Which of these compounds has bonds that are primarily ionic? (a) BBr3; (b) BaBr2; (c) BeBr2.

Paul Hage 2G
Posts: 105
Joined: Thu Jul 25, 2019 12:17 am

Re: 2D.3

Postby Paul Hage 2G » Mon Dec 02, 2019 3:45 pm

BaBr2 has bonds that are primarily ionic because the electronegativity between Ba and Br is very large. This is because Ba is in Group 2 of the periodic table and Br is in Group 17. Following the electronegativity trend (electronegativity increases across the periodic table), we can see that there is a very large electronegativity difference between Ba and Br. Ba is also lower than Be on the periodic table, and because electronegativity decreases going down the periodic table, the electronegativity difference between Ba and Br will be greater than the electronegativity difference between Be and Br.

AKhanna_3H
Posts: 104
Joined: Wed Sep 18, 2019 12:19 am

Re: 2D.3

Postby AKhanna_3H » Mon Dec 02, 2019 3:48 pm

Ba and Br have the highest difference in electronegativity according to periodic table trends, therefore the bonds in BaBr2 are primarily ionic


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