composition of atoms of the first 20 elements with electron distribution in various shells
Answers
Element Electronsconfiguration
1
H
hydrogen
1
2
He
helium
2
3
Li
lithium
2.1
4
Be
beryllium
2.2
5
B
boron
2.3
6
C
carbon
2.4
7
N
nitrogen
2.5
8
O
oxygen
2.6
9
F
fluorine
2.7
10
Ne
neon
2.8
Element Electrons diagram and configuration
11
Na
sodium
2.8.1
12
Mg
magnesium
2.8.2
13
Al
aluminium
2.8.3
14
Si
silicon
2.8.4
15
P
phosphorus
2.8.5
16
S
sulfur
2.8.6
17
Cl
chlorine
2.8.7
18
Ar
argon
2.8.8
19
K
potassium
2.8.8.1
20
Ca
calcium
2.8.8.2
_/\_Hello mate__here is your answer--
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The rules for writing of the distribution of electrons in various shells for the first eighteen elements are given below:
(1) The maximum number of electrons that a shell can hold is given by the formula '2n^2', where 'n' is the orbit number or energy level index (n = 1, 2, 3...).
The maximum number of electrons present in an orbit of n = 1 given by 2n^2 = 2 × 1^2 = 2 Similarly, for second orbit, it is 2n^2 = 2 × 2^2 = 8 For third orbit, it is 2n^2 = 2 × 3^2 = 18 And so on .....
(2) The outermost orbit can be hold by a maximum number of 8 electrons.
(3) Shells are filled with electrons in a step wise manner i.e., the outer shell is not occupied with electrons unless the inner shells are completely filled with electrons.
I hope, this will help you.☺
Thank you______❤
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