The following data represents the distribution of electrons, protons and neutrons in atoms of four elements A, B, C
, D.
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a) The electronic distribution of element B is 2,8,7 <br> (b) The element B is non metal (CI) .Its atom needs only one electron to have the configuration of nearest noble gas element argon (2,8,8) <br> (c ) The elements B and C form pair of isotopes since both of them have same number of electrons 17 and also same stomic number (Z=17) <br> (d) The elements A and D represent pari of isobars since both of them have same number (a=40)
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Metals –A, Non-metals – B,C,D, Isotopes – B, C, Isobars – A, D
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