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| Question | Answer |
|---|---|
| 1 hydrogen | h |
| 2 helium | he |
| 3 lithium | li |
| 4 beryllium | be |
| 5 boron | b |
| 6 carbon | c |
| 7 nitrogen | n |
| 8 oxygen | o |
| 9 flourine | f |
| 10 neon | ne |
| 11 sodium | na |
| 12 magnesium | mg |
| 13 alminum | al |
| 14 silicon | si |
| 15 phosphorus | p |
| 16 sulfur | s |
| 17 chlorine | cl |
| 18 argon | ar |
| 19 potassium | k |
| 20 calcium | ca |