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प्रश्न
Identify the group and valency of the element having atomic number 119. Also predict the outermost electronic configuration and write the general formula of its oxide.
उत्तर
| Group | 1 |
| Valency | 1 |
| Outermost electronic configuration | 8s1 |
| Formula of Oxide | \[\ce{M2O}\] |
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