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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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