An atom of an element has mass number 31. It has 16 neutrons. The vale – InterviewSolution

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1.	An atom of an element has mass number 31. It has 16 neutrons. The valence shell and the number of valence electrons, respectively, could be
Answer» M SHELL and 6 electrons M shell and 5 electrons N shell and 5 electrons L shell and 6 electrons Solution :Mass number =31 . Number of neutrons =16 ATOMIC number =31-16=15 Electronic ARRANGEMENT is 2,8,5, 'M' shell is valence shell and and there are 5 electrons in the valence shell. 6

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