Protons have a positive charge. The number of protons in a nucleus determines the identity of the atom (element) and this number is called the atomic number.
D. Proton
Subatomic particles are structures of smaller size than the atom and compose it. Protons determine the identity of the atom. Option D is correct.
Subatomic particles are matter structures that are smaller in size than an atom. Hence, subatomic particles compose the atoms, determining their properties.
Many subatomic particles are unstable and remain unknown. However, three of them are the most stable ones,
Subatomic particles can be either,
These particles differ in their electric charge and their mass.
Neutrons and protons compose the nucleus of the atoms, while electrons orbit around them.
The proton number is known as the atomic number and is the one that determines the identity of the atom.
The correct option is D- Protons.
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