Chapter 8: From Physics to Biology

"The Disappearing Spoon"


This chapter started out with the description of a Time magazine cover, a red nucleus and 15 scientists as the electrons. The two that the chapter is about are Emilio Segre and Linus Pauling. Both of them was after element 43, this element was known as the Lochness monster of elements Despite their amazing careers in chemistry they are remembered for their mistakes. Segre's being that there was no transuranic elemental properties in element 93. Pauling's mistake was publishing the tripe helix DNA Theory. Despite these mistakes both scientist came out to be very succesful.


Atomic Number- 43

Mass- 98

Period number- 5

Group Number-7

Electron Configuration- [Kr] 4d55s2

Element Classification- Metal

It is not naturally occurring, it was isolated by Carlo Perrier and Emilio Segre by bombarding molybdenum atoms with deuterons.

History and Uses- Technetium can be used used in small amounts to slow down the rate the rate at which steel corrodes, as medical tracer, and be used to calibrate particle detectors.

Unique Characteristics- it is radioactive.

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Atomic Number- 93

Mass- 237.05

Period Number- 7

Group Number- None

Electron Configuration- [Rn] 5f46d17s2

Element Classification- metal

It is not naturally occurring. It was made by bombarding Uranium with neutrons.

History and uses- no main uses

Unique characteristics- It is radioactive.

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Atomic number-15

Mass- 30.9

Period number-3

Group number-15

Electron Configuration- [Ne] 3s23p3

Element Classification- non-metal

Naturally occurring in urine and found in phosphate rock.

History and uses- White phosphorus is used as a chemical weapon and is poisonous. Red phosphorous is used in matches. Black phosphorus has no uses.