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| Q. |
An element with an atomic number of 17 is - |
| A. | an alkali metal |
| B. | a rare gas |
| C. | a halogen gas |
| D. | a transition metal |
| Answer» C. a halogen gas | |
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Explanation: Chlorine has atomic number of 17. It is a halogen gas along with fluorine (F), bromine (Br), iodine (I), and astatine (At). |
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