Elements
found on earth
people
isotopes
100

This element atomic number is 30

zinc

100

These two elements is what we breath in everyday to survive

Oxygen (O) and Nitrogen (N)

100

He created the first atomic model 

Democritus 

100

a positive electric charged atom 

Protons 

200
This elements chemical symbol is Ne

Neon

200

these two elements can be found in the ground and are expensive 

Gold (Au) and Silver (Ag)

200

He was the first person to define the atom 

John dalton 

200

a negatively charged atom 

electrons 

300

This elements atomic mass is 1.0078

Hydrogen 

300

This element is found in bananas 

Potassium (K)

300

known for the investigation of the atomic structure 

Niels Bohr 

300

a neutrally charged atom 

neutrons 

400

This elements chemical symbol is Hg 

Mercury 

400

Sixth most common element and can be found in 2.6% of the earths crust 

Sodium (Na)

400

he was known for his pioneering in his study of radioactivity and the atom 

Ernest Rutherford 

400

this is where electrons, neutrons and protons can be found 

the nucleus 
500

This elements chemical symbol is W

Tungsten 

500

This element can be found in the earths crust and has the same name as a US currency 

Nickel (Ni)

500

made the most recent atomic model 

Erwin Schrödinger

500

this is formed through

Radioactive decay