Which event would be impossible to explain by using john dalton's model of the atom?

a. an iron atom emits particles when it is struck by light

b. an oxygen atom combines with two hydrogen atoms to form water

c. an acid reacts with a base to form salt and water

d. the atoms in sodium metal react with water

The correct answer is option(A).

Explanation:

An iron atom emits particles when it is struck by light.This phenomena is called as Photoelectric effect.

Photoelectric effect is defined as when photons (particles of light) falls on the metallic surface, electrons from the surface are ejected out and these ejected out electrons are called photo electrons.

This phenomena was not explained by John Dalton's model of the atom.

Where as John Dalton's model of atom explains that matter is made up smallest indivisible particle that is atom, elements combines in fixed proportion with another elements to give compounds, chemical reaction is an arrangement of an atoms.

The correct answer is option(A).

Explanation:

An iron atom emits particles when it is struck by light.This phenomena is called as Photoelectric effect.

Photoelectric effect is defined as when photons (particles of light) falls on the metallic surface, electrons from the surface are ejected out and these ejected out electrons are called photo electrons.

This phenomena was not explained by John Dalton's model of the atom.

Where as John Dalton's model of atom explains that matter is made up smallest indivisible particle that is atom, elements combines in fixed proportion with another elements to give compounds, chemical reaction is an arrangement of an atoms.

The answer is:

A) An iron atom emits particles when it is struck by light

The explanation:

when Dalton's model of the atom (ESAAO) John Dalton proposed that all matter is composed of very small things which he called atoms. This was not a completely new concept as the ancient Greeks (notably Democritus) had proposed that all matter is composed of small, indivisible (cannot be divided) objects.

When Dalton proposed his model electrons and the nucleus were unknown.

The answer is:

A) An iron atom emits particles when it is struck by light

The explanation:

when Dalton's model of the atom (ESAAO) John Dalton proposed that all matter is composed of very small things which he called atoms. This was not a completely new concept as the ancient Greeks (notably Democritus) had proposed that all matter is composed of small, indivisible (cannot be divided) objects.

When Dalton proposed his model electrons and the nucleus were unknown.

i'm pretty sure its b i might be wrong though!