An element has atomic number 13 and atomic mass of 27.
(i) How many electrons are there in each atom of the element?
(ii) How are these electrons distributed in the various energy levels?
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Solution
The atomic number of the element is 13
(i) The electrons present in this element are 13.
(ii) Electronic configuration of this element is 2, 8, 3.
Distribution of electrons in energy levels is K, L, M.