Home » Chemistry » The valence electrons of (_{12}Mg) are in theThe valence electrons of (_{12}Mg) are in the The valence electrons of (_{12}Mg) are in the A. 3s orbital B. 2p(_{x}) C. 2s orbital D. 1s orbital Correct Answer: Option A Explanation (_{12}Mg = 2, 8, 2) (= 1s^{2} 2s^{2} 2p^{6} 3s^{2}) Related Posts When sodium nitrate dissolves in water, ∆H is positive. This means that? Which of the following relationships correctly expresses the Boyle’s law? What is the change in the oxidation number of phosphorus in the following reaction? 4P(s)… B is an isotope of the element (^{238}{92}Ur). The isotope B has An organic compound gave the following results on analysis: C = 29.3% ; H =… A mixture of petrol and water can be separated through