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Can u give me some imp. problems from atmic structure.

Can u give me some imp. problems from atmic structure.

Grade:12

1 Answers

AskIITians Expert Sunil,DCE
8 Points
12 years ago

1)a radioactive material has mean life 1620 yrs and 540 yrs for alpha-emission and beta- emission respectively.The time in which half of the material remains undecayed emitting both these radiations is________

2)mass of 2 curie uranium(234)is_______

3)Half life of radium is 1620yrs &its atomic weight =226kg/kilomole.No. of atoms that will decay from 1 gm. of sample per second will be _________

4)Ratio of momenta of an electron of mass me and an alpha particle of mass ma which are accelerated from rest by a potential difference of 250V is_______

  Hi,

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