The answer is.... Y   Yttrium

Steve Mikell<br>[log in to unmask]<br>


> Sent: Thursday, June 25, 2015 at 2:19 PM
> From: "David Hillman" <[log in to unmask]>
> To: [log in to unmask]
> Subject: [TN] NTC Element Quiz Question
>
> Here is the Element Quiz Quiz Question:
> 
> The Question:
> This element has two allotropic forms. This element has few commercial
> applications - it acts as an activator for green phosphors in TV tubes and
> as a stabilizer for fuel cells. It can exhibit a rare oxidation state in
> which the valence is not a whole integer. Which element is being described?
> 

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