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The element Z is placed in 2nd group of the modern periodic table, it burns in the presence of oxygen to form basic oxide. To extract the element Z, calcium hydroxide is added to seawater to form magnesium hydroxide precipitate. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column of the periodic table. The most common and stable type of Z atom found in nature has 12 protons.1. Give the name of the element Z.a. Nitrogenb. Magnesiumc. Borond. Chlorine2. Give the nuclear symbol of element Z.a. Beb. Cac. Mgd. Sr3. Identify the number of neutrons and electrons of element Z.a. 12,12b. 12,11c. 11,12d. 12,104. Give the electronic configuration of Z.a. 2,8,3b. 2,8,2c. 2,8,1d. 2,8,35. Which period does this element belong to, in the periodic table?a. 1b. 2c. 3d. 4 |
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Answer» 1. c. Boron 2. c. Mg 3. a. 12,12 4. b. 2,8,2 5. c. 3 |
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