Pg.no. 104
Optical Fiber Communication
Scientific Fiber Lasers
Photodynamic Machine
Radioactive Machine
Gas Lamp Mantles
Radioactive waste
Nuclear Weapons
Radioactive waste
Nuclear Weapons
Smoke Detector
Mineral Analyzers
Radioactive waste
Mineral Analyzers
Er
Yb
Lu
Ac
Th
Pa
U
Np
Pu
Am
Cm
Bk
Cf
Erbium
Ytterbium
Lutetium
Actinium
Thorium
Protactinium
Uranium
Neptunium
Plutonium
Americium
Curium
Berkelium
Californium
Note:
H
E
M
N
R
O
Na
Human body (Top ten elements by weight).
Earth Crust (Top eight elements by weight).
Magnetic (ferromagnetic at room temperature).
Nobel Metals (corrosion resistant)
Radioactive (all isotopes are radioactive)
Only Traces Found in Nature (less then a million)
Never found in Nature (only made by people)
(S) Solid
(L) Liquid
(G) Gas
(T) Metallic Solid
(D) Red liquid
(C) Colorless gas
Elements present in the Earth Crust:
Oxygen
Silicon
Aluminum
Iron
Calcium
– 46.6%
– 27.7%
- 8.1%
– 5.0%
– 3.6%
T
T
T
T,R,O
T,R
T,R
T,R
T,R,O
T,R,O
T,R,Na
T,R,Na
T,R,Na
T,R,Na