103 মাধ্যমে পারমাণবিক সংখ্যা 89 দিয়ে তেজস্ক্রিয় উপাদানের একটি সিরিজের কোনো

actinon's Usage Examples:

that time, radon only referred to the isotope 222Rn, whereas the names actinon and thoron denoted 219Rn and 220Rn, respectively.

219Rn is derived from the most stable isotope of actinium (227Ac)—named "actinon"—and is an alpha emitter with a half-life of 3.

(T) are still in use today, as is thoron (Tn) for radon-220 (though not actinon; An is usually used instead for a generic actinide).

actinon's Meaning':

any of a series of radioactive elements with atomic numbers 89 through 103

Synonyms:

group; actinide; actinoid; grouping;

Antonyms:

zygomorphic; inactivity;