Question

drag the tiles to the correct boxes to complete the pairs.
match the subatomic particles to their properties.

electron neutron proton
determines the atomic number of the atom
has the least mass of the subatomic particles
has no electrical charge

Explanation:

1. The atomic number of an atom is defined as the number of protons in its nucleus, so protons determine the atomic number.
2. Electrons have a mass of approximately $9.11\times10^{-31}$ kg, which is far smaller than the mass of protons ($1.67\times10^{-27}$ kg) and neutrons ($1.68\times10^{-27}$ kg), making them the least massive subatomic particle.
3. Neutrons are neutral subatomic particles, meaning they carry no electrical charge, unlike positively charged protons and negatively charged electrons.

Answer:

• determines the atomic number of the atom: proton
• has the least mass of the subatomic particles: electron
• has no electrical charge: neutron