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प्रश्न
Identify the last element in lanthanoid series.
विकल्प
Nd
Tm
Lu
Tb
MCQ
उत्तर
Lu
Explanation:
The final element in the lanthanoid family is Lu, or leutetium, which has an atomic number of 71 and a mass number of 175.5. It is a silver-white metal that is corrosion resistant in dry air but not in moist air.
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Properties of Lanthanoids
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