Which one is not the isotopes of hydrogen
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In isotopes the number of neutrons are
Which one of the following elements is essential for construction is nuclear reactors
Which one of the following is not radioactive
A radioactive substance has a half life of four months, three-fourth of the substance would decay in
Cobalt - 60 is commonly used in radiation therapy because it emits
Which one of the following can be used to confirm wether drinking water contains a gamma emitting isotope or not
Which of the following is a radioactive element