Is H2O an anion

Answer 1

H2O is written without a symbol for charge because the molecule has no charge. A water molecule is neutral.

Ions will always have a charge.

If H2O were to dissociate to H+ and OH-, then you would have two ions (note the charges). H2O ---> H+ + OH-

It is worth mentioning that this reaction doesn't really happen, even if you see it written a lot. There is a complex structure to water and we usually acknowledge that by saying the "solvated proton" becomes a hydronium molecule and the actual reaction is H2O + H2O ---> H3O + OH- .

In fact, it is a dynamic process and the proton does not stay with one water molecule and may exist in a state associated with several molecules. But, that takes the answer too far off track.

Answer 2

Hydroxide (OH-) contains both an atom of oxygen (O) and hydrogen (H). Many ions are from only ONE atom or element, but since OH- contains two separate elements, it is polyatomic.

Answer 3

No H2O is not a polyatomic Ion it is a Covalent Bond

Answer 4

No, it is not an anion. It's water, which is neutral.

Answer 5

H20 is a molecule made of three atoms, two of which are hydrogen and the other an oxygen.

Answer 6

No, H2O (water) is a neutral molecule, not an anion. An anion is a negatively charged ion that forms when an atom gains electrons.

Answer 7

Yes, HCl is a polyatomic ion.