Which contribution is a modification to Dalton's original atomic model?

Atoms are indivisible.
Electrons are scattered in an atom.
Atoms are the smallest unit of an element.
Atoms of the same element have the same properties.

Question

Which contribution is a modification to Dalton's original atomic model?

Atoms are indivisible.
 Electrons are scattered in an atom.
 Atoms are the smallest unit of an element.
 Atoms of the same element have the same properties.

deidrenicoleg · Answer

I think it is Atoms are the smallest unit of an element.

Vocaloid · Answer

mm not quite. remember what Dalton's postulates were, and see which answer choice was not part of the original postulates (the one that was a modification to his model) https://images.slideplayer.com/26/8328027/slides/slide_2.jpg |dw:1591657534034:dw|

Vocaloid · Answer

major hint - notice how he did not make any statements about the components of an atom (he thought they were the smallest particles of an element, but we know now that atoms are made of smaller particles)

deidrenicoleg · Answer

Atoms of the same element have the same properties?

Vocaloid · Answer

that's under postulate 2

electron scattering was discovered after Dalton made his postulates, so it wasn't part of them

deidrenicoleg · Answer

oh so its Electrons are scattered in an atom

Vocaloid · Answer

yup

deidrenicoleg · Answer

thank you