there is an element X with 13 protons and 14 neutrons in the nucleus and 13 electrons revolving around the nucleus in different shells in its atoms. mention the valency of this element
Answers
Answered by
1
Answer:
3
Explanation:
If an atom has 13 electrons then it belongs to p-block of periodic table.
s level can accommodate 2 electrons.
p level can accommodate 6 electrons.
13 means 1s2,2s2 2p6, 3s2 3p1.
As you can see there totally 5 sub-shells.
Total number of shells are 3(1,2,3).
In the last shell there are 3 electrons.
Valency = No. of electrons in the last shell = 3
Similar questions