2016年4月24日 · O=N^(+)(-O^-)_2 "Electrons "= 3xx6+5+1=24, "thus 12 electron pairs" The nitrogen is quaternized and bears a formal positive charge. The doubly bound oxygen is neutral. The two singly bound oxygen atoms have formal negative charges. Of course, the negative charges are delocalized around the 3 oxygen centres.

2015年10月29日 · First is you need to know the number of valence electrons. You can do this by (1) drawing the electron configuration per element or (2) consulting your periodic table. If you chose to draw the electron configuration per element, you will have something like this: N (atomic number = 7) : 1s^2 color (red) (2s^2) color (red) (2p^3) (5 outermost electrons) O (atomic number = 8) : 1s^2 color (red ...

2016年3月20日 · The nitrate ion, NO_3^-, has a SINGLE, FORMAL negative charge. The sum of the individual oxidation numbers will be the charge on the ion. We thus have N^(V+)+3xxO^(-II) = -I as required. Note that Lewis structure of nitrate anion shows formal charge on THREE of the FOUR participating atoms: a positive charge on the central (quaternized) nitrogen atom, and negative charges on TWO of the oxygen ...

2016年8月25日 · See this old answer. In the nitrate ion, 3 of the 4 constituent atoms have formal charge; the third oxygen, formally doubly bound in the Lewis representation, is neutral. Of course the neutral charge can move to the other oxygen atoms by resonance (or rather the negative charge on the other oxygens can move to the neutral atom). O=N^(+)(-O)_2""^- The important point to note is that in the ...

2016年4月27日 · Whilst we often draw the structure of NO3 as a Lewis structure comprising double and single bonds, the reality is that the three N-O bonds are actually identical. The delocalised electron system results from a combination formal charge with each oxygen carrying −2⁄3 of a charge, and the nitrogen carrying a +1 charge.

2017年11月17日 · Well we got nitrate ion...and this gives 5_N+3xx6_O+1_"negative charge"=24*"valence electrons" with which to play.... The nitrogen centre is quaternized, i.e. it formally bears a positive charge...because in the following resonance structures there are SIX ELECTRONS associated with it rather than the SEVEN electrons required for neutrality (we can count out the 4 valence electrons; there are 2 ...

2015年10月30日 · Normally, the first element in the chemical formula is the central atom, with the exception, of course, of hydrogen. Say you are given the chemical formula CaCl_2, the central atom is probably Ca atom. Except if the first element mentioned in the formula is H. Then the second element in the formula is your central atom (as in the case of HNO_3 where N is the central atom). You have to remember ...

2016年4月18日 · Trigonal planar. There are 3xx6+5+1=24 valence electrons. A Lewis structure of (O=)N^+(-O)_2^- is reasonable. Because there are 3 regions of electron density around the central nitrogen, trigonal planar geometry is suggested. Note that in the given Lewis structure, 3 of the 4 atoms bears a formal charge. The sum of the formal charges: +1-1-1 …

2016年6月22日 · NO_3^- is the nitrate ion. Nitrate is the counterion of nitric acid. Nitrate salts tend to be soluble in aqueous solution. The Lewis structure of nitrate ion is interesting because a formal positive charge lies on the nitrogen, and 2 formal negative charges are carried by the oxygens. This Lewis structure need not be known at A levels. O=N^(+)(O^-)_2, i.e. the counterion to nitric acid, O=N ...

2016年10月10日 · The bond order is the average, "4 electron pairs" / "3 bonds" = "4/3 electron pairs per bond". The Lewis structure of nitrate ion is unusual because it features 3 formal charges in that the nitrogen is quaternized and formally cationic, and 2 of the oxygen atoms have formal negative charges. Of course, the sum of the charges +1+2xx(-1)=-1 …