Examlex
Why was the Compromise of 1850 written? How did it affect national politics?
Electron Shells
Regions around an atom's nucleus where electrons are likely to be found, each shell having a fixed capacity for electrons.
Magnesium
a lightweight, silvery-white metallic element that is essential for both plant and animal life.
Neutrons
Neutral particles found in the nucleus of an atom, with no electric charge.
Protons
Positively charged subatomic particles found within the nucleus of an atom, defining the element's atomic number.
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