Yttrium How atomic mass is found… Yttrium 87-( x0) Yttrium 88-( x0) Yttrium 89-( x100) Yttrium 90-( x0) Yttrium 91-( x0) ( x0)+( x0)+( x100)+( x0)+( x 0)=88.905
Electron Configuration for Yttrium 1s2 2s2p6 3s2p6d10 4s2p6d1 5s2 [Kr] 5s14d1
Common uses Yttrium Oxide is one of the most important compounds of yttrium and accounts for the largest use. It is widely used in making YVO4 europium, and Y2O3 europium phosphors to give the red color in color television tubes. Yttrium oxide also is used yttrium – iron-garnets, which are very effective microwave filters.
How, Where and who discovered yttrium Who: Johan Gadolin Where: Ytterby Finland How: He discovered it while analyzing the composition of the mineral gadolinite
Magnesium Atomic number- 12 Atomic Mass Protons-12 Neutrons-12 Electrons-12
Magnesium Common natural occurring isotopes Magnesium 24 magnesium 25 and magnesium 26 How atomic mass is found magnesium 24 (mass= ) (abundancy=78.99%) magnesium 25 (mass= ) (abundancy=10%) magnesium 26 (mass= ) (abundancy=11.01%) ( x.7899) + ( x.10) + ( x.1101) = amu
Electron configuration 1s2,2s2,2p6,3s2 [Ne] 3s2
Magnesium Common uses jet-engine parts, rockets and missiles, luggage frames, portable power tools, and cameras and optical instruments.