Atomic Theory and Structure

Nuclear symbol includes

Mass number

Created an atomic theory

Which particle did this experiment lead to the discovery of?

Flourine-19 is written in

Ions are

Discovered the atom is mostly empty space

Uncertainty principle both an atom's position and velocity cannot be known precisely

What scientists developed this atom model?

Gold foil experiment led to the discovery of

Boron has 5 protons. An isotope of boron has 7 neutrons. How do you write this isotope?

Found the missing particle that contributed to an atom's mass

What scientists developed this model of the atom?

Created a model of an atom with electrons moving in fixed orbits