571.Assign reason for each of the following: Noble gases are mostly chemically inert.
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572.Assign reason for the following: Bismuth is a strong oxidizing agent in a pentavalent state.
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573.NO is paramagnetic in the gaseous state but diamagnetic in the solid and liquid states. Justify?
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574.(CH3)3 N is basic but (CF3)3 N is not basic. Explain.
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575.Why the melting and boiling points of halogens increases in going from top to the bottom of the group?
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576.Give appropriate reason for the following observation: Only higher members of Group 18 of the periodic table are expected to form compounds.
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577.Give appropriate reason for the following observation: Fluorine is a stronger oxidising agent than chlorine, though fluorine has lower electron affinity than chlorine.
578.Give appropriate reason for the following observation: NO2 readily forms a dimer, whereas ClO2 does not.
NO2 forms dimer due to presence of odd electrons where ClO2, does not form dimer because due to the reason that odd electron is delocalized as it is involved in p(pi)-d(pi) bonding.
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579.
Account for the following: Chlorine water has both oxidizing and bleaching properties.
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580.
Account for the following: H3PO2 and H3PO3 acts as good reducing agents while H3PO4 does not.
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