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B
0 and 0 respectively
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C
-1 and -1 respectively
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D
-1 and 0 respectively
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Solution
The correct option is B 0 and 0 respectively Formal Charge on any atom is calculated as :
Formal charge (FC) = V−L−B2
where, V = Total number of valence electrons in the valence shell of the atom. L = Total number of non bonding (lone pair) electrons of the atom. B = Total number of bonding (shared) electrons of that particular atom.
HClO3
Formal charge = V−L−B2 = 7−2−102 = 0
ClO−3
Formal charge = V−L−B2 = 7−2−102 = 0
Thus, formal charge of Cl in HClO3 and ClO−3 is 0 and 0 respectively.