Columbia Encyclopedia

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Pm

(Encyclopedia)Pm, symbol for the element promethium. ...

Pr

(Encyclopedia)Pr, symbol for the element praseodymium. ...

Ru

(Encyclopedia)Ru, symbol for the element ruthenium. ...

Pb

(Encyclopedia)Pb, symbol for the element lead.

Pd

(Encyclopedia)Pd, symbol for the element palladium. ...

Ts

(Encyclopedia)Ts, symbol for the element tennessine. ...

Ti

(Encyclopedia)Ti, symbol for the element titanium. ...

Tl

(Encyclopedia)Tl, symbol for the element thallium. ...

Th

(Encyclopedia)Th, symbol for the element thorium. ...

Rf

(Encyclopedia)Rf, symbol for the element rutherfordium. ...

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