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CBSE Class 12-science Answered

<div> <div style="padding: 0px; margin: 0px; border: 0px; outline: 0px; font-size: 14px; vertical-align: baseline; color: #555555; font-family: Lato, Arial, sans-serif; font-weight: bold; line-height: 20px; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;">IN A RADIOACTIVE EQUILIBRIUM &nbsp;&nbsp;<img class="Wirisformula" style="padding: 0px; margin: 0px; outline: 0px; max-width: 455px; vertical-align: middle !important; background: transparent;" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=06b64a9c208b483a7f47aafd528c0196.png" alt="A rightwards arrow B rightwards arrow C" align="middle" />, &nbsp; THE RATIO OF NUMBER OF ATOMS OF A TO B IS &nbsp; &nbsp;<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=fae48183d62bce93b21486856a0d9752.png" alt="1 colon space 2.8 asterisk times 10 hat 6." align="middle" /></div> <br style="padding: 0px; margin: 0px; color: #555555; font-family: Lato, Arial, sans-serif; font-size: 14px; font-weight: bold; line-height: 20px;" /> <div style="padding: 0px; margin: 0px; border: 0px; outline: 0px; font-size: 14px; vertical-align: baseline; color: #555555; font-family: Lato, Arial, sans-serif; font-weight: bold; line-height: 20px; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;">IF HALF LIFE OF A IS 1620 YEARS, WHAT IS THE HALF LIFE OF B?</div> </div> <div>&nbsp;</div>
Asked by Isha | 18 Jan, 2016, 06:43: PM
Expert Answer
Answered by Vaibhav Chavan | 21 Jan, 2016, 11:45: AM
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