Hi folks - astatine is not the correct element - the correct element is Radon but the Friday Element Quiz Rule Arbitration Committee (FEQRAC) has taken issue with Bev's response as he appeared to be providing two answers and hedging his bets. So the winner of the Friday Element Quiz will be whomever provides the correct bonus question answer first. The FEQRAC also noted Bev was still eligible for that portion of the task. Good Luck. Dave Bev Christian <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 10/29/2011 05:59 PM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to Bev Christian <[log in to unmask]> To <[log in to unmask]> cc Subject Re: [TN] NTC Friday Element Quiz - the Question Well I consider this one another tuffy. Radioactive elements? That's the easy part: Technetium Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium And then the new ones, usually man-made. I know technetium, radium (watches), thorium and uranium (have used UF6 myself)are long lived, leaving: Polonium Astatine Radon Francium Actinium Protactinium Neptunium And then new ones, usually man-made. Then looking each up in Wikipedia and NIST for isotopes and half lives: Long half life # of isotopes Polonium 103 years 33 Astatine hours 31 Radon 3.8 days 34 Francium 21.8 minutes 34 Actinium 21 years 31 Protactinium 32,760 years 29 Neptunium years And then new ones, usually man-made. 20 or less (found so far) So, it looks like astatine is the answer, which is what Thomas A. Carroll suggested. However, I'm still going to guess radon, since it says in Wikipedia: "Although colorless at standard temperature and pressure, when cooled below its freezing point of 202 K (?71 ?C; ?96 ?F), radon has a brilliant phosphorescence which turns from yellow to orange-red as the temperature is lowered." I will assume that for Dave 91.2 hours is still "a few" and he has an old source that only lists 31 isotopes instead of 34. If I'm wrong, well it has been fun anyways. Bev -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of David D. Hillman Sent: Friday, October 28, 2011 8:14 AM To: [log in to unmask] Subject: [TN] NTC Friday Element Quiz - the Question Hi folks - Here is the Friday Element Quiz Question: The Question: This element is highly unstable and very dangerous due to its intense radioactivity. This element has 31 isotopes but none have a half life of more than a few hours. When this element is cooled below its freezing point, it phosphoresces brightly. What element is being described? Bonus question: Name the country where this element was initially discovered, and name the university/country who is given credit for the discovery of the element. The winner of the weekly element quiz will get the services of Clumpy and Kloumpios for the week. So far Clumpy and Kloumpios have: Week 1 Lamar Young, SCS Coatings - accomplished nothing (drank lots of coffee) Week 2 Bev Christian, RIM - conducted REACH material testing Week 3 Drew Meyer, Benchmark Electronics Inc. - Solderability testing and mowed the lawn Week 4 Ian Fox, Goodrich - had an epic journey of travel Week 4 Gary Ferrari, Garrick Global - unknown Week 5 Fredrick Miller, Astrolab - unknown Week 6 David Nelson, Raytheon - Were tackling dummys for Dallas Cowboys Week 7 Graham Collins, L3 Communications - Cleaned gutters and painted window trim Week 8 Bill Noel, ITT Geospatial Systems Division - unknown Week 9 Steve Gregory of RD Circuits - unknown Week 10 David Bealer of Watchfire Signs - descaled the in-line wash machine! Ouch! Week 11 Dick Krug of Sparton Corporation - assisted with AS9100 quality management systems requirements audit Week 12 Steve Creswick of Balanced Enterprise Solutions - Acted as Steve's "go fer" due to a broken leg! Week 13 Gebhard Neifer, Delphi - conducted a plasma pre treatment Taguchi DOE for a sealing process Week 14 Bev Christian, RIM - assisted with a tin pest investigation/test Week 15 Bev Christian, RIM - assisted Bev shoveling snow Week 16 David Bealer of Watchfire Signs - assisted with reflow profiling Week 17 Brian Ellis, rumored to be retired - assisted with rewiring the house, had a tractor accident and found his cousin Kloumpios Week 18 Denny Fritz, SAIC - assisted with tin whisker inspection/examinations Week 19 Graham Collins, L3 Communications - assisted with scraping barnacles, boat paint and boat engine maintenance Week 20 Mark Woolley, PTRL Laboratory Avaya - assisted with weather observations (70F to snow) and resolving electrochemical migration failures Week 20 Tom Carroll, Boeing Defense, Space and Security - assisted with commercial aircraft galley inspection Week 21 Brian Ellis, supposedly retired, and Tom Carroll, Boeing Defense, Space and Security - assisted with root cause corrective action tasks - assisted with nothing but catching up with the family Week 22 Drew Meyer, Benchmark Electronics Inc. - assisted with metallographic cross-sections and Dye & Pry testing Week 23 Bev Christian, RIM - assisted with a creep corrosion project and the setting up of an oxygen bomb Week 24 Steve Gregory, RD Circuits - unknown Week 25 Ahne Oosterhof, A-Laser - assisted with stencil aperture data analysis and split/stacked firewood Week 26 Scott Post, Delphi - assisted/participated in the Kokomo Airshow Race Event Week 27 Brian Ellis, supposedly retired - assisted with tedious website work and family home cooking Week 28 Nigel Burtt - abandoned Nigel and were rumored to be involved in UK News Corps/News International cellphone/journalism/politics scandal Week 29 Richard Stadem,GD-AIS - unknown Week 30 Robert Wolfe, Kimchuk Inc and Graham Naisbitt, Gen3 - assisted with a hot tub refurbishment for post work day de-stressing - assisted with SIR and Cleanliness testing Week 31 Bev Christian, RIM Inc, and Denny Fritz, SAIC - assisted with lab testing - assisted with tin whisker investigations Week 32 Steve Mikell, supposedly retired - attempted to provide both US Congress and EU lawmakers "engineered" solutions Week 33 Mark Woolley, PTRL Laboratory Avaya - unknown Week 34 Leland Woodall, CSTech Inc. - assisted with new model qualifications,updating supporting documentation, strain gaging, performing cross sections, verifying a new selective soldering process, and finally assisted with the development of a plant-wide countermeasure effectiveness auditing program (Wow, they had to work hard this week!) Week 35 Joe Russeau, Precision Analytical Laboratories - assisted with new equipment preparations Week 36 Patrick Goodyear, PGE - assisted with beach trash collection duty Week 37 Dave Elder, Tait Radio Communications - assisted Dave Hillman with a geography lesson, watch USA vs Irland in World Rugby Cup and went skiing. Week 38 Steve Mikell, supposedly retired - assisted with ???? Week 39 Andy Giamis, Commscope - assisted with metallographic cross-sectional analysis of die cast Mg and taught a group of Cub Scouts how to hotwire a tractor Week 40 Gebhard Neifer, Delphi - assisted with a customer audit Week 41 Ian Fox, Aero Engine Controls - assisted with pcb cross-section analysis Week 42 Andy Giamis, Commscope - Andy gave them the week off (BBQ and English ale party) Week 43 ??? - assisted with ???? Everyone have a safe week. Dave Hillman Rockwell Collins [log in to unmask] ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. 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