Question

(i) Which allotrop of phosphorus is more reactive and why ?
(ii) How are the supersonic jet aeroplanes responsible for the depletion of ozone layers ?
`F_(2)` has lower bond dissociation enthalpy than `Cl_(2)`. Why ?
(iv) While noble gas is used in filling balloons for meterological observations ?

Answer 1

(i) White phosphorus is more reactive because of its pyramidal structure and the strain involved in the `P_(4)` molecule.
(ii) Oxides of nitrogen emitted by supersonic jet planes are responsible for the depletion of ozone layer.
(iv) Helium is used in filling balloons for meterological observations.