Explanation
O2 molecule is paramagnetic due to the presence of two unpaired electrons one each in antibonding pi molecular orbitals
Nitrogen fixation is carried out in nature in presence of Mo
Graphite shows moderate conductivity due to the presence of unpaired or free fourth valence electron on each carbon atom
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Mixture of three parts of conc. HCl and one part of conc. HNO3 is called aqua regia.
Pb2+does not form complex with NH3
Mixture of H2 and CO is known as synthesis gas or water gas
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Isotopes of oxygen are 16O, 17O and 18O
In Haber’s process, N2 is fixed (converted) as NH3
Nitrous oxide (N2O) is called laughing gas because when inhaled in moderate quantities, it produces hysterical laughter.
NF3 is least basic because lone pair of electrons on N is not easily available due to high electronegative of F
NO2 is a brown coloured gas
Boron compounds are electrons deficient and therefore behave as Lewis acids
Chlorine does not react directly with oxygen
NH3 is lighter than air, highly soluble in water, therefore, Hg can be displaced safely for its collection
Alkaline pyrogallol absorbs O2 and oil of cinnamon absorbs O3
Oxygen does not react with chlorine directly
Amongst Mg3N2, NH3 and N2O3, only N2O3 shows nitrogen in + 3 oxidation state. In Mg3N2 and NH3, N shows -3 oxidation state
All proteins contain nitrogen as an essential constituent
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