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Period
| Question | Answer |
|---|---|
| Carbon | c |
| Argon | ar |
| krypton | kr |
| flourine | f |
| helium | he |
| hydrogen | h |
| radon | rn |
| lithium | LI |
| beryllium | be |
| sodium | na |
| magnesium | mg |
| potassium | k |
| calcium | ca |
| scandium | sc |
| titanium | ti |
| vanadium | V |
| chromium | cr |
| mangagnese | mn |
| iron | fe |
| cobalt | co |
| nickle | ni |
| copper | cu |
| zinc | zn |
| boron | b |
| carbon | c |
| nitrogen | n |
| oxygen | o |
| fluorine | f |
| neon | ne |
| helium | he |
| aluminum | al |
| silicon | si |
| phosphorus | p |
| sulfur | s |
| chlorine | cl |
| argon | ar |
| silver | ag |
| gold | au |
| mercury | hg |
| tin | sn |
| tungsten | w |
| lead | pb |