Nitrate ion
[NO3]-
N
1
O
3
  charge = -1
 
Real ion.

Gram formula weight (molecular mass) = 62.004


Wikipedia Page:

Nitrate ion
is defined with respect to the entities below:
The entities below are defined with respect to:
Nitrate ion
Hard Lewis base (generic)


Hydroxy acid anion (generic)


Lobe-HOMO Lewis base (generic)


Nitro compound (generic)


Nonmetal anion (AS/A2 generic)


Real complex ion (generic)


VSEPR geometry = AX3 (generic)


Weak base (AS/A2 generic)


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