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If Matt trades two candy bars to Andy in exchange for one baseball card,
V
Commonly known as the symbol for vanadium, a chemical element with atomic number 23, recognized for its corrosion resistance and various applications in alloys.
Isotope
Variants of a particular chemical element which differ in neutron number, and consequently in nucleon number, but have the same number of protons in their nuclei.
Protons
Positively charged subatomic particles found in the nucleus of an atom, defining the element's atomic number.
Osmium
A dense, hard, bluish-white transition metal in the platinum group that is the most dense naturally occurring element.
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