Group Period
Shells and Electrons
Atomic Symbol
Reactive
Periodic People
100
it is in group 8 and period 5
What is ruthenium
100
it has 1 shells and 1 electrons on its outer shell
What is Hydrogen
100
its atomic symbol is Fe
What is Iron
100
The second most reactive on the left
What is Caesium
100
The main thing that Democritus has discovered
What is the idea that there are tiny fundamental particles from which all matter is made.
200
it is in group 15 and period 6
What is bismuth
200
it has 2 shells and 4 electrons on its outer shell
What is Carbon
200
its atomic symbol is W
What is tungsten
200
it is The least reactive Halogen
What is tennessean
200
The main thing that John Dalton has discovered
What is the five points of the Atomic Theory
300
it is in group 10 and period 5
What is palladium
300
it has 4 shells and 7 electrons on its outer shell
What is Bromine
300
its atomic symbol is Am
What is Americium
300
it is the least reactive alkali metal
What is Lithium
400
it is in group 9 and period 6
What is Iridium
400
it has 5 shells and 3 electrons on its outer shell
What is Indium
400
its atomic symbol is Rn
What is Radon
400
The main thing that J.J Thompson discovered
What is the electron
500
it is in group 13 and period 7
What is Nihonium
500
it has 7 shells and 7 electrons on its outer shell
What is bohrium
500
its atomic symbol is below Mn but to the left of Ir
What is Rhenium
500
these two are the two most reactive elements on the periodic table
What is francium and fluorine
500
What did Ernest Rutherford discover?
What is the proton, and the first model of the atom