what are the rules of distributing electrons in the outer most shells
Answers
Explanation:
The electrons first occupy the shell with the lowest energy i.e., closest to the nucleus. The first or the innermost energy shell (K or n = 1) can take only two electrons. The second shell (L or n = 2) can contain upto 8 electrons. From third shell (M or n = 3) onwards, the shells become bigger.⟵(๑¯◡¯๑)
Answer:
The distribution of the electrons in the energy shells is known as electronic configuration. It is based on Bohr-Bury scheme according to which
The maximum number of electrons that can be present in a particular energy shell of an atom is given by
2n2
, where
n
is the number of energy shell.
The energy shells
K
,
L
,
M
and
N
are the first four energy shells given by Bohr. so the maximum number of electrons which can be accommodated in each shell is given as follows
a) In first energy shell as
K
shell
(n=1)
Maximum No of
e−=2n2=2×(1)2=2
b) In second energy shell or
L
shell
(n=2)
Maximum No of
e−=2n2=2×(2)2=8
c) In third energy shell or
M
shell
(n=3)
Maximum No of
e−=2n2=2×(3)2=18
d) In fourth energy shell or
N
shell
(n=4)
Maximum No of
e−=2n2=2×(4)2=32
The order of energy of these energy shells starting form nucleus is
K<L<M<N
hope it's helpful