Hey there! can you plz tell how to find the valency of elements after 20 atomic number... tell the electronic configuration too...!!!!
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It is easy .
Firstly take its atomic number for example Copper ( Cu)= 29
So its electronic configuration will be:-
Cu = (2,8,8,8,3)
Therefore as it has 3 in its last orbit it has valency 3.
Firstly take its atomic number for example Copper ( Cu)= 29
So its electronic configuration will be:-
Cu = (2,8,8,8,3)
Therefore as it has 3 in its last orbit it has valency 3.
Gouri06:
for elements after 20
no, it is for shells that are 2,8,18,32
i asked my teacher today and she sad that it will be like this 2,8,8,18 for elements after 20
okay no problem thanks for your concern...!!!
it is not possible bcoz if we take zinc then:-
hmmm
valency of zinc will be:- 2,8,8,12 and its valency is not 12
but if we consider iron then as per you it will be 2,8,8,8
but it isn't noble gas
yes
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