An element has atomic number 13 and an atomic mass of 27.
(a) How many electrons are there in each atom of the element ?

(b) How are these electrons distributed in the various energy levels ?

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Solution

(a) The atomic number of given element is 13 which is defined by the number of protons in an atom. Thus, there are 13 e^-(s) in each atom of the given element because in a neutral atom, number of protons is equal to the number of electrons.

(b) Electronic configuration of given element (2,8,3) is

K = 2; L = 8; M = 3

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An element has atomic number 13 and an atomic mass of 27. (a) How many electrons are there in each atom of the element ? (b) How are these electrons distributed in the various energy levels ?

An element has atomic number 13 and an atomic mass of 27.
(a) How many electrons are there in each atom of the element ?

(b) How are these electrons distributed in the various energy levels ?