Question

12, 1
elements. (Table 5.7). The rows 1
in which it is present.
Energy of an electron in the first shell (K
to 3 are filled in this table. Accordingly you
have to fill the rest of the table.
shell) is the lowest. Energy of electron in the
Admin
Electron
Distribution of electrons
Atom
number
Electronie
Symbol
in the Shell symbol (maximum capacity)
configuration in the
atom K (2) L (8)
numerical form
M (18)
N (32)
Hydrogen
H
1
1
1
Helium
He
2.
2
2
Lithium
3
2
1
Carbon
C с
6
Nitrogen
N
7
Oxygen
0
8
Fluorine
F
9
Neon
Ne
10
Sodium
Na
11
Chlorine СІ
17
Argon Ar
18
Bromine Br
35
5.7 electronic configuration of some elements
The electronic configuration in the numerical form contains numbers separated
ommas. Here the numbers indicate the electron number in the shells with increasing orde
era​

Answer 1

K shell = 2 electrons

L shell = 8 electrons

M shell= 18 electrons

N shell= 32 electrons

the last cell can accommodate up to 8 electrons only