Hi folks - Here is the Friday Element Quiz Answer (I have a new book on
the Elements by John Emsley so lots of new information for future
quizzes).
The Question:
This element is the most expensive metal in the world at a staggering
price of $75,000 per kilogram! The amount of this element contained in the
ores mined for its production is typically 0.003%. The world production of
this element is around 10 tons per year. What element is being described?
Bonus question: This element was called by a different name for many years
in Germany - what was that name?
The Answer:
The element is lutetium (Lu). Platinum is $12,800/kg and gold is
$12,500/kg but Lu has both of them beat for cost. Lu is one of the rarest
of the Rare Earth elements but is still 7X more abundant that silver. Lu
is a high energy Beta particle emitter and is being studied for possible
radiotherapy uses as the isotope has a half life of 6.75 days.
The answer to the bonus question was Cassiopeia. As with many of the
elements, there was disagreement on who discovered an element the first.
Austrian chemist Karl Auer was working in Germany, isolated Lu from a
sample of yttrium oxide and named it cassiopeia. However, French chemist
George Urbain isolated Lu in 1907 and was given the naming credit. Lu is
extremely difficult to create as a pure metal - the first time that was
accomplished was in 1953.
There were several good answers (Rhodium was quite popular)but Bev
Christian, RIM, is the quiz winner and will get the services of Clumpy and
Kloumpios for the week. They have been to Bev's facility a couple of times
so getting there should be easy.
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 Waatchfire 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????????
Everyone have a fun and safe weekend.
Dave Hillman
Rockwell Collins
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