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July 2009

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Subject:
From:
Bev Christian <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Bev Christian <[log in to unmask]>
Date:
Fri, 10 Jul 2009 09:56:27 -0400
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#1 Bismuth

#1A infinite. It is a stable element at the end of one or more radioactive element decay series. 

#2 I will guess it is plutonium 238. 

Bev
RIM

----- Original Message -----
From: TechNet <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Sent: Fri Jul 10 09:49:42 2009
Subject: [TN] NTC - Friday Elements Quiz

Hi folks - Its Friday, its raining like crazy in Iowa, and a gloomy day so 
here is a TechNet Friday elements quiz. The ground rules are simple: No 
using Wikipedia (other internet resources are allowed) and the first 
correct complete answer will get to have a Diet Mt. Dew from Doug!

Question #1: Which element expands upon freezing?

Question #1A:  What is the half life of this element?

Question #2: The thermoelectric generators on the Voyager, Galileo and 
Cassini spacecraft utilize the radioactive decay heat from a radioactive 
element oxide and have logged over 250 million thermoelectric operating 
hours with no failures - name the element oxide.

Good Luck!

Dave Hillman
Rockwell Collins
[log in to unmask]

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