Physics, 22.07.2021 18:00 villafana36
Câu 38. Hạt nhân urani 238 U sau một chuỗi phân rã, biến đổi thành hạt nhân chì 206 Pb . Trong quá trình
92 82
đó, chu kì bán rã của 238 U biến đổi thành hạt nhân chì là 4,47.109 năm. Một khối đá được phát hiện có
92
chứa 1,188.1020 hạt nhân
23892 U
và 6,239.1018 hạt nhân
20682 Pb . Giả sử khối đá lúc mới hình thành không
chứa chì và tất cả lượng có mặt trong đó đều là sản phẩm phân rã của
23892 U . Tuổi của khối đá khi được
phát hiện là
Answers: 1
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Câu 38. Hạt nhân urani 238 U sau một chuỗi phân rã, biến đổi thành hạt nhân chì 206 Pb . Trong quá t...
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