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Question

{Au}^{198}

এর অবক্ষয় ধ্রুবক প্রতিদিন 0.257 ।

{Au}^{198}

এর অর্ধায়ু কত?

0.27 days

0.72 days

7.20 days

27.0 days

2.70 days

ANS : 5

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