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Radium (Ra) atomic number 88
1. Radium has 45 isotopes and nuclear isomers. 2. Radium has no known today allotropes.
not known today
Not known today
She discovered it
The mass of the most known and stable isotope of radium, 226Ra, is 226,025 409 8(25).
Madam curie of coursr
she was known for discovering the radioactive elements radium and polonium. She was also known for all of her efforts put into discovering more about radium. She also perfected the x rays too
Radium has 88 electrons. The number of neutrons is different for each isotope: Number of neutrons = Atomic mass - 88 The most stable and known isotope of radium, 226Ra, has 138 neutrons.
In the periodic table, Ra stands for the element radium. Radium is a highly radioactive element with atomic number 88. It is in the alkaline earth metal group and is known for its luminescent properties.