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Periodic Table

Horizontales
Atomic number: 8
chemical element with the symbol Al and atomic number 13.
discovered by Joseph-Louis Gay-Lussac and Louis-Jaques Thénard
symbol N and atomic number 7
Sir William Ramsay in London, in 1895
21 protons, 24 neutrons and 21 electrons
Protons and electrons 18. 22 neutron
Reactive nonmetal, sometimes considered a metalloid
Symbol: P
lemon yellow sintered microcrystals
Verticales
Li
colorless gas exhibiting an orange-red glow when placed in an electric field
sed in welding and for frosting glass,
It is a soft, silvery-white, highly reactive metal.
symbol Si
protons, neutrons and electrons are all the same
silvery-white metal. It is relatively soft and has a low density
symbol K and atomic number 19
First element in the periodic table
mineral that is necessary for life