feature
it doesnt !!
Makes them not the same.
The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
Personality
file name
Special.
The atomic number or z number or the number of protons is what makes one atom different from another. The atomic number or z number or the number of protons is what makes one atom different from another.
Arrangement of particles
That is atomic number.Mass number can be similar
What makes the Amoses Deza Malone and her mom and Mr. Lewis and the sleets different from one another?
Clothing, music, language, hobbies.