Home › CBSE Class 11 (Science) › Chemistry › S and P Block Elements › Radium occurs naturally only via the decay chain…
Radium occurs naturally only via the decay chain of which elements?
AArgon and radon
BUranium and thorium
CLead and bismuth
DCarbon and silicon
Answer & Solution
Correct answer: B. Uranium and thorium
Radium is not primordial and arises only from the decay of uranium and thorium.
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