Ra226 નો , = 1620 વર્ષ છે. 0.001s માંથી દર મિનિટે કેટલા alpha કણો છૂટા પડતા હશે ?
[ans : 2.17 x 10^9 મિનિટ-]
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refer to ncert as ihas given brief explanation about this topic
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refer to ncert as ihas given brief explanation about this topic
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