Question

Order the following

Answer 1

Electron, proton/ neutron (same size), elements and finally compounds, hope it serves you!

Answer 2

Explanation:

An atom consists if an electron, proton and a neutron. These are called as subatomic particles.

The mass of electron is $9.1\times 10^{-31}\ kg$

The mass of proton is $1.672623\times 10^{-27}\ kg$

The mass of the neutron is $1.674929\times 10^{-27}\ kg$

The atomic mass of an element is the sum of protons and electrons. An element is defined as the species that has same number of protons.

A chemical compound is defined as the species that are composed of more than one molecules.

So, the correct order is electrons, protons, neutrons, elements and compounds.