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An element A atomic number 7 mass number 14 B electronic configuration 2, 8, 8 C electrons 13, neutrons 14 D Protons 18 neutrons 22 E electronic configuration 2, 8, 8, 1 State (i) valency of each element (ii) which one is a metal (iii) which is a non-metal (iv) which is an inert gas. |
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Answer» An element A atomic number 7 mass number 14 B electronic configuration 2, 8, 8 C electrons 13, neutrons 14 D Protons 18 neutrons 22 E electronic configuration 2, 8, 8, 1 State (i) valency of each element (ii) which one is a metal (iii) which is a non-metal (iv) which is an inert gas. |
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