A) Hydrogen forms complexes in +1 as well as -1 oxidation state
B) Hydrogen has more than one isotope
C) Hydrogen has mainly two allotropes
D) Sum of electron, proton and neutron of lightest isotope of hydrogen is one
Correct Answer: D
Solution :
All statements are correct except which should be sum of electron, proton and neutron of lightest isotope of hydrogen is equal to 2. \[\operatorname{Lightest} particle of hydrogen =\,\,_{1}^{1}H\] \[n=0\] \[\operatorname{p}=1\] \[e=1\] \[\operatorname{sum} =1+1=2\]
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