radium

Chemistry Science 14 of 14 appearances
Practice Chemistry

"radium" appearances by year

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All Chemistry clues by year

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# Clue Answer As Given Value Round Category Air Date Show
While working with pitchblende in 1898, the Curies discovered polonium & this other element radium $400 J THE ELEMENTS 2022-10-25 #8727
Its 35 known isotopes are all radioactive radium $1,000 J 6-LETTER ELEMENTS 2013-06-24 #6636
Egyptian sun god radium $400 DJ ELEMENTAL SYMBOLS 2012-11-09 #6475
Element No. 88, it was once widely used on glow-in-the-dark watch dials--a curie-ously stylish but bad idea! radium $1,600 DJ THE ELEMENTS OF STYLE? 2012-02-13 #6311
Ra:One letter off from an arm bone radium $400 DJ ELEMENTAL CLUES 2010-09-13 #5976
As you'd expect, radon gas is collected out of the radioactive decay of this element, symbol Ra radium $400 DJ CHEMISTRY 2002-05-09 #4084
You can isolate about 1 gram of this element, Ra, out of several tons of pitchblende radium $200 DJ CHEMISTRY 1999-04-27 #3382
The Curies discovered polonium & this radioactive element in pitchblende Radium $100 J THE ELEMENTS 1996-11-29 #2820
Ra-226, the most abundant isotope of this element, has a half-life of 1,620 years radium $200 DJ THE ELEMENTS 1996-05-07 #2702
It was discovered in 1898 when 2 scientists in France extracted a minute amount from a ton of pitchblende radium (or polonium) FJ THE ELEMENTS 1995-07-03 #2511
Though the Curies discovered it in pitchblende in 1898, it wasn't isolated as a metal until 1910 radium $300 J THE ELEMENTS 1994-01-17 #2161
Abbreviated Ra, it can cause cancer as well as treat it radium $300 J THE ELEMENTS 1993-06-21 #2041
From 1898, when the Curies discovered it, until 1954, only about five pounds of this metal was produced radium $600 DJ METALS 1991-01-22 #1477
Radon is the gaseous emanation from this element radium $500 J CHEMISTRY 1986-05-12 #436
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