Why is Hg20 Mercury (I) oxide? ?

  • Thread starter Thread starter LoveisMagic
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LoveisMagic

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i don't get why the roman numeral is 1 instead of 2. Can someone please help?
 
oxygen is having (-2) charge here.
Compound has 2 Hg.
Final compound is electrically neutral.

If Hg has +1 charge 2 Hg has (+2) charge.
2 -2 =0. Hence Hg2O is mercury (1) oxide. 1 denotes the oxidation state of mercury which is +1
 
ok...this is a little tricky, if you want you can read up on ions, compounds, and oxidation.

Hg2O is a neutral compound (charge = 0) made up of :
->the positive ion Hg1+ (1+ is a superscript, it's its "charge". it has different oxidation states, the most common of which are Hg1+ which is your Mercury(I) and Hg2+ which is your Mercury(II) )
->and the negative ion O2- (the 2-, its charge,is also a superscript)

when you combine these two to make a compound it takes two of the positive Hg1+ to balance out the charge of the O2-; hence the final neutral product Hg2O (with the 2 as a subscript, durn YIA not having subs ans supers, grr)

you basically have this balanced equation:
2(Hg1+) + O2- --> Hg2O

look at the charges:
2(1) + (-2) = 0
2 - 2 = 0

does that help?
you can email me or something if it's still confusing.
 
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