Question

Which one of the following is not part of john daltons atomic theory ?

a)all elements are composed of atoms
b) all atoms of the same element have the same mass
c)atoms contain subatomic particles
d) a compound contains atoms of more than one element

Answer 1

c) atoms contain subatomic particles.

John Dalton's atomic model was also known as a 'Billiard Ball Model' because he thought that all atoms were just simple spheres, and nothing complex inside.