atomic number 90 | Amarkosh

Meaning of word atomic number 90 from English dictionary with examples, synonyms and antonyms.

atomic number 90 noun

Meaning : A soft silvery-white tetravalent radioactive metallic element. Isotope 232 is used as a power source in nuclear reactors. Occurs in thorite and in monazite sands.

Synonyms : th, thorium

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