MHT CET Chemistry question
The only radioactive element among the lanthanoids is [MHTCET 2015]
Answer: (C)
Solution
Promethium (Z = 61) has no stable isotope and is the only radioactive lanthanoid. Hence the correct option is (c).
The only radioactive element among the lanthanoids is [MHTCET 2015]
Promethium (Z = 61) has no stable isotope and is the only radioactive lanthanoid. Hence the correct option is (c).