Use lewis dot symbols to show the sharing of electrons between a nitrogen atom and fluorine atoms to form a molecule in which ea
ch atom has an octet of electrons.
2 answers:
Explanation:
Lewis dot structure is the representation of the valence electrons around the atom of an element. it also shows the number of unpaired electrons present in a molecule.
Nitrogen has atomic number of 7 and electronic configuration is given as:
Fluorine has atomic number of 9 and electronic configuration is given as:
Since fluorine is highly electronegative atom.will attract electrons of nitrogen towards itself.So in Lewis dot structure the fluorine atom will present around single nitrogen atom.
The Lewis structure is given in an image attached.
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Correct answer is .
Phosphoric acid is a polyprotic acid having 3 acidic hyrdogen therefore it will have 3 pka values.
The equations for the release of acidic hydrogen can be written as:
From the pka values we can judge the idea of pH as using Henderson-Hasselbalch Equation, we get the relation between pH and pka.
Using the following equation, relation of pH and pka is
Using this equation, we can find that the equation having pka= 2. 14 is closest to the pH=3.2 so the ionic form in this equation will be dominant at the same pH.
Therefore at pH=3.2 the ionic form of
is dominant.