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Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.1H, 7N, 20Ca, 16S, 4Be, 18ArWhich of these elements belong to the second group? |
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Answer» Explanation: Electronic configuration:⇒ The atomic NUMBER of hydrogen = 1The electronic configuration of 1H = 1⇒ The atomic number of nitrogen = 7The electronic configuration of 7N = 2,5⇒ The atomic number of CALCIUM = 2The electronic configuration of 20Ca = 2,8,8,2⇒ The atomic number of SULPHUR = 16The electronic configuration of 16S = 2,8,6⇒ The atomic number of beryllium = 4The electronic configuration of 4Be = 2,2⇒ The atomic number of ARGON = 18The electronic configuration of 18Ar = 2,8,8Among the given elements, Ca and Be belong to second group. Because both has two electrons in the outermost shell. Thus, these two elements belong to second group.. |
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