Chemistry Storyboard part 3
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The number of protons determines what type of atom the atom is
We are Helium-4 because we have 2 protons and 2 neutrons
Elements have atoms with different amounts of neutrons, called isotopes. They are still the same type of atom because the number of protons is the same.
We are Helium-3
Hydrogen for example has three different isotopes, but the most common in Hydrogen-1. Its atomic mass is one because it has no neutrons.
The number of electrons does not affect what type of atom and atom is. They only affect charge, more on that later though.
The electrons of atoms are arranged in 'shells'. The outermost shell is called the valence shell.
Electrons in the valence shell are called valence electrons.
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