बिना सोचे समझे Pop Quiz

25% of Gallium-65 atoms have decayed after 15 minutes. What is the half-life of Gallium-65?
Choose the right answer:
Option A 7.5 मिनटों
Option B 30 मिनटों
Option C 23.4 मिनटों
Option D 15 मिनटों
 WakabaSuzukaze posted एक साल  से अधिक पुराना
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