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==Key Stage 5==
===Meaning===
A '''charm-quark''' ('''c''') is a type of [[quark]] with a [[Electrical Charge|charge]] of <math>+\frac{2}{3}</math>.
===About Charm-quarks===
: The '''charm-quark''' is denoted with a lower case '''c'''.
: A '''charm-quark''' is the most [[mass]]ive and least stable of all [[quark]]s.
{| border="1" style="border-collapse:collapse"
| style="height:20px; width:120px; text-align:center;"|
[[Charm-quark]]
| style="height:20px; width:120px; text-align:center;"|<math>qQ=+\frac{2}{3}</math>
| style="height:20px; width:120px; text-align:center;"|<math>S=0</math>
| style="height:20px; width:120px; text-align:center;"|<math>bB=+\frac{1}{3}</math>| style="height:20px; width:120px; text-align:center;"|<math>lL=0</math>
|-
| style="height:20px; width:120px; text-align:center;"|
[[Anticharm-quark]]
| style="height:20px; width:120px; text-align:center;"|<math>qQ=-\frac{2}{3}</math>
| style="height:20px; width:120px; text-align:center;"|<math>S=0</math>
| style="height:20px; width:120px; text-align:center;"|<math>bB=-\frac{1}{3}</math>| style="height:20px; width:120px; text-align:center;"|<math>lL=0</math>
|}