Chemistry, asked by mrjatt3019, 6 months ago

What is valency of elements having atomic number 61??

Answers

Answered by anjali8830718

Answer:

Promethium is one of only two radioactive elements that are followed in the periodic table by elements with stable forms, the other being technetium. Chemically, promethium is a lanthanide. Promethium shows only one stable oxidation state of +3

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