Solubility for Oxides and Hydroxides

[Kyoma]

Does anyone know any list of oxides or hydroxides that are soluble in water?

AND

If the term 'tetrahedral' means being bonded to 4 other atoms, are there other terms that mean being bonded to 3 atoms, 2 atoms, etc.?

Thanks.

 

[alxm]

Does anyone know any list of oxides or hydroxides that are soluble in water?

The CRC handbook, for one.

If the term 'tetrahedral' means being bonded to 4 other atoms

No, it does not. Tetrahedral means tetrahedral, i.e. sharing some property in common with a tetrahedron, a geometric object.
A methane molecule is tetrahedral because the four hydrogen atoms are located at the corners of a tetrahedron.

See also "point groups".

 

[Borek]

Does anyone know any list of oxides or hydroxides that are soluble in water?

You are aware of the fact that solubility is not a TRUE/FALSE property? All hydroxides are to some extent soluble (especially if you are ready to accept fact that 10^-10 g/L means that something has dissolved).

 

[Yanick]

As far as your second question, you might want to google molecular geometry. That might be what you were wondering about.

 

[Kyoma]

You are aware of the fact that solubility is not a TRUE/FALSE property? All hydroxides are to some extent soluble (especially if you are ready to accept fact that 10^-10 g/L means that something has dissolved).

Thanks for the second qns.

From the Internet, I have checked that all oxides are insoluble except calcium (sparingly), barium and Group 1 metals while all hydroxides are insoluble except ammonium, barium and Group 1 metals. (All this are based on the GCSE 'O' Level Syllabus). But the problem is, sulphur trioxide, a nonmetal oxide, is soluble in water to form sulfuric acid, so the qns is:

Are all nonmetal oxides soluble in water to form acids?

 

[Borek]

You may safely assume most oxides are insoluble - if they dissolve, that means they react with water. Product of the reaction can be either base or acid, depending on the oxide.

 

[pzona]

If the term 'tetrahedral' means being bonded to 4 other atoms, are there other terms that mean being bonded to 3 atoms, 2 atoms, etc.?

Google VSEPR Theory.