In NO3– ion, the number of bond pairs and lone pairs of electrons on nitrogen atom are
(i) 2, 2
(ii) 3, 1
(iii) 1, 3
(iv) 4, 0
NCERT Class XI
Chemistry - Exemplar Problems
Chapter 4. Chemical bonding and molecular structure
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iv) 4, 0<br /><br /><br /> is the answer..
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In , the number of "bond pairs" and "lone pairs" of electrons on nitrogen atom are (iv) 4, 0.
Explanation:
According to the "Lewis structure" of , there are 4 bond pair and 0 lone pair on N atom of nitrate ion.
In the "Lewis structure", we have to count total number of valence electrons and arrange them in such a way that all atoms get octet configuration as it is more stable.
Hence, in nitrate ion, N will form N-O bond with two O atoms and N=O with one O atom. There will be three lone pairs on single bonded O atoms whereas double bonded O atom will have two lone pairs.
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