what is the number of neutrons in HNO3 ?
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Total no.of neutron is 31.
No of neutron in Hydrogen is 0
No of neutron in nitrogen is 7.
14 is atomic mass .
7 is atomic no.
Sum of neutron and protons =atomic mass
Neutron +7=14
No of neutrons is 7.
No.of neutrons in oxygen is 8.
So three atoms are given so 3×8 =24
Total no of neutrons =0+24+7=31
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