| Name | Arsenic |
|---|---|
| Number | 33 |
| Symbol | As |
| Memory sentence | A skull & crossbones. Rat poison is arsenic trioxide, commonly called simply "arsenic". In other forms, such as is found in apples, arsenic is nutritious. Arsenic has three natural varieties: black, gray, and yellow, as shown by the three colors in the icon. |
Tags: group:15, period:4
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