Moderators: Chem_Mod, Chem_Admin

Alvaro Chumpitaz 4D
Posts: 56
Joined: Wed Sep 11, 2019 12:17 am


Postby Alvaro Chumpitaz 4D » Mon Nov 25, 2019 7:52 pm

How can you tell whether an oxide is acidic, basic or amphoteric without the chemical reaction formula such as in 6A,17?

Posts: 57
Joined: Wed Sep 18, 2019 12:15 am

Re: Oxides

Postby ariaterango_1A » Mon Nov 25, 2019 7:59 pm

You can tell by looking at the periodic table... metal oxides for bases, nonmetal oxides form acids, and the elements Pb, Bi, Sn, In, Ga, Al, Be, Ge, As, and Sb as oxides form amphoteric (both an acid and a base). Hope this helps!

Sion Hwang 4D
Posts: 51
Joined: Wed Sep 18, 2019 12:21 am

Re: Oxides

Postby Sion Hwang 4D » Tue Nov 26, 2019 2:35 am

Basic oxides usually are located within the group 1 alkali and group 2 alkaline earth metals. Oxides that are located in the far right of the periodic table (next to the metalloids) are mostly acidic. Near the metalloids, there is a band of elements that are amphoteric. Meaning, when the central atom that the oxygen is bound to is more electronegative, the molecule will be more acidic.

Posts: 100
Joined: Wed Sep 18, 2019 12:19 am

Re: Oxides

Postby rohun2H » Tue Nov 26, 2019 9:54 am

It is most useful to know the patterns of the periodic table.

Posts: 55
Joined: Wed Sep 18, 2019 12:17 am

Re: Oxides

Postby 505106414 » Tue Nov 26, 2019 4:05 pm

rohun3H wrote:It is most useful to know the patterns of the periodic table.

Are there any exceptions?

Return to “Amphoteric Compounds”

Who is online

Users browsing this forum: No registered users and 2 guests