level: Level 1
Questions and Answers List
level questions: Level 1
| Question | Answer |
|---|---|
| Xe | xenon= 0 |
| Rn | radon= 0 |
| Kr | krypton= 0 |
| Ar | argon= 0 |
| Ne | neon= 0 |
| He | helium= 0 |
| I | iodine= -1 |
| Br | bromine= -1 |
| Cl | chlorine= -1 |
| F | fluorine= -1 |
| Te | tellurium= -2 |
| Se | selenium= -2 |
| O | oxygen= -2 |
| S | sulfur= -2 |
| As | arsenic= -3 |
| P | phosphorus= -3 |
| N | nitrogen= -3 |
| Al | aluminum= +3 |
| Cd | cadmium= +2 |
| Zn | zinc= +2 |
| Ag | silver= +1 |
| Ra | radium= +2 |
| Ba | barium= +2 |
| Sr | strontium= +2 |
| Ca | calcium= +2 |
| Mg | magnesium= +2 |
| Be | beryllium= +2 |
| Fr | francium |
| Cs | cesium= +1 |
| Rb | rubidium= +1 |
| K | potassium= +1 |
| Na | sodium= +1 |
| Li | lithium= +1 |
| H | hydrogen= +1 / -1 |