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Hahn
Rutherford
Seaborg
Curie
The depletion in Ozone layer is caused by _ .
The depletion of ozone layer is due to
The difference between a nuclear reactor and atomic bomb is that _
The discovery of neutron became very late because
The electrochemical cell stops working after some time because _
The electronic configuration of an atom having atomic number ‘20’ is
The electronic configuration of atom / ion can be defined by which of the following?
The element of an electric stove made
The element used in the manufacture of safety matches is
The elements that provide colour to fireworks are