User:用户名永远已存在/沙盒
氢
| S |
| f |
title="Beryllium: alkaline earth metal; primordial; solid" style="text-align: center; padding: 2px; line-height: normal;background:#ffdead
- border
- 2px solid #6e6e8e
- position
- relative;;" |Beryllium
| S |
| f |
title="Beryllium: alkaline earth metal; primordial; solid" style="text-align: center; padding: 2px; line-height: normal;background:#ffdead