27 Oct 2021
Problem 12d
Page 336
Section: Problems by Topic
Chapter 8: Periodic Properties of the Elements
Textbook ExpertVerified Tutor
27 Oct 2021
Given information
Given element:-
The valance electrons present and the tendency of gain or loss of electrons in each given element are to be calculated.
Step-by-step explanation
Step 1.
In the molecular or atomic orbitals, the electrons of an atom or molecule is distributed. This distribution of electrons is called the electronic configuration of the atom or molecule. It is used to show the orbitals of an atom in its ground state.
Atomic number is the total number of protons present in an atom.
On basis of the periodic table of elements, the atomic number of selenium is .
So selenium has electrons that are distributed in their respective orbitals.
Therefore, the electronic configuration of element is .
Where, is the noble gas which represents the inner electrons.
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