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| 1. |
Match the atomic number 2,4, 8,15, and 19 with each of the following:(i) A solid non-metal belonging to the third period. (ii) A metal of valency 1. (iii) A gaseous element with valency 2. (iv) An element belonging to Group 2. (v) A rare gas. |
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Answer» (i) → 15 (ii) → 19 (iii) → 8 (iv) → 4 (v) → 2 |
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