Dave
Could you take a minute and list or point me to the 8 isotopes of tellurium
please? That is the missing link.
Regards
Mike
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of David D. Hillman
Sent: Friday, August 26, 2011 8:30 PM
To: [log in to unmask]
Subject: [TN] NTC Friday Element Quiz - the Answer
Hi folks - Here is the Friday Element Quiz Answer:
The Question:
When this element is added to rubber, it speeds up the curing process and
makes the product less susceptible to aging. This element is used in
photoreceptors. This element has 8 naturally occurring isotopes. This
element is present in coal up to 2 ppm. What element is being described?
Bonus question: Why did this element cause Dimitri Mendeleyev problems?
The Answer:
The element is Tellurium (Te! Te is used in a number of metal alloys used
in the electronics industry such as tellurium copper and some stainless
steels. Te is used to tint glass and ceramics. It is also added to lead
(Pb)in batteries making them harder and more acid resistant. Elemental Te
has low toxicity but does cause extremely bad breath and body odor for
those working with it.
Bonus Question Answer: The father of the Periodic Table, Dimitri
Medeleyev, had lots of problems with the element Tellurium as its atomic
weight was heavier than the element that followed it (Iodine). Te's atomic
weight was found to be 128 but Iodine's was 127 so Medeleyev decided that
one of the atomic weights must be in error. It took almost 50 years to
determine why Te's position in the periodic table was correct. The
dominate isotopes of Te are Te130 and Te128 which together account for 2/3
of its mass giving an overall atomic weight of 127.6. Iodine has only one
dominate isotope - I127 -giving it an atomic weight of 126.9. (Denny
Fritz, SAIC, provided the only correct bonus question answer)
The winner of the weekly quiz is Joe Russeau, Precision Analytical
Laboratories, and he will get the services of Clumpy and Kloumpios for the
week. The guys sent a text message from their cell phones saying they had
a blast at Leland's, had a wonderful last day beer and burger party and
were promptly heading for Joe's facility in Indiana. They also were
extremely glad to get out of the path of Hurricane Irene but did assist a
few folks near Leland's facility with hurricane proofing their houses
before hitting the road.
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 ???
Everyone have a safe weekend, especially those on the US East coast.
Dave Hillman
Rockwell Collins
[log in to unmask]
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