alleryमैरी और पियरे क्यूरी द्वारा किन दो रेडियोधर्मी तत्वों की खोज की गई थी?
Aयूरेनियम और थोरियम
Bपोलोनियम और रेडियम
Cक्यूरियम और फ्रांसियम
Dकोबाल्ट और सीज़ियम
Answer & Solution
Correct answer: B. पोलोनियम और रेडियम
मैरी और पियरे क्यूरी ने 1898 में रासायनिक तत्वों पोलोनियम और रेडियम की खोज की थी।
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