Elements with a Unique Last Letter

There are three elements with a unique ending letter. Can you name them?
Quiz by HinesBrothers
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Last updated: May 23, 2020
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First submittedFebruary 6, 2020
Times taken284
Average score66.7%
Rating4.00
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Last Letter
#
Answer
H
83
Bismuth
S
15
Phosphorus
T
27
Cobalt
+10
Level 73
Apr 10, 2020
Good quiz! However, the # gave it away too easily. I'd recommend you take it out and add more time