Chemistry - f-block Question with Solution | TestHub
Chemistryf-blockf-blockMedium2 minQB
ChemistryMediuminteger
The number of radioactive elements among lanthanides and actinide is/are.
Answer:
15
Solution:
In lanthanide series only Pm (promethium) is radioactive element while all actinide elements are radioactive elements.
lanthanide ⇒ Pm (1)
Actinide ⇒ all (14)
15 elements are radioactive elements among lanthanides and actinides.
Stream:JEESubject:ChemistryTopic:f-blockSubtopic:f-block
⏱ 2mℹ️ Source: QB
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