pBlock ElementsII - Result Question 17

####17. Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen? (2012)

(a) HNO3,NO,NH4Cl,N2

(b) HNO3,NO,N2,NH4Cl

(c) HNO3,NH4Cl,NO,N2

(d) NO,HNO3,NH4Cl,N2

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Solution:

  1. Let oxidation number of N be x.

In HNO3,+1+x+3(2)=0x=+5

In NO, x2=0x=+2

In N2,

x=0

In NH4Cl,x+41=0x=3



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