am i right so far?

Question

i was asked to draw dot and cross diagrams for the following covalent compounds,and then draw their shapes and state what the bond angles are,

H2O - I said was obviously water, with a bond angle of 104 degrees and the shape is bent.

H30+ - I said was a hydronium ion, with a bond angle of 107 degrees and the shape is pyramidal

-H402+ - I don't know what the hell this is lol

H202 (H-0=0-H) - I said is hydrogen peroxide, with a bond angle of 104 degrees and the shape is bent.

I cant show u my dot and cross diagrams but is the above right? And if you know what -H402+ is please let me know lol a chinese webpage came up as Methoniumion but i still dont know it

Answer 1

Your bond angles for H2O are right.
According to wikipedia (so you may want to check this) hydrogen peroxide bond angles are 94.8 degrees between the O-O and O-H bonds and 111.5 degrees between the two O-H bonds in gaseous form.
The hydronium ion has a trigonal pyramid shape I don't know the bond angles, but your information is probably right.
No idea what H4O2+ is though I think it must be another more complicated oxonium ion (oxygen with three bonds). (Methoniumion doesn't sound right, there's no methyl group but it may be one of those quirks of naming sent to confuse us)

Good luck

Answer 2

H2O OK!!! However the three atoms are bent but in the same plane.

H3O+ OK!!!

H4O2+ ????? Never heard of it.

H2O2 OK!!! Yes not only is the shape bent but the four atomms are not all in the same plane. H-O=O is in one plane and O=O-H is angled in to a different plane.

Answer 3

I wish i knew. Sorry. I've not got that far with Biology yet!