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Science CBSE Homework Assignments
Class 9
Structure of the atom
Subatomic particles
2.
Calculate the number of electrons and protons I
Task:
2
m.
1
. Find out the number of electrons revolve around the nucleus of
\(Co\)
. \(Z\) of
\(Co\)
.
27
24
25
26
2
. Calculate the number of protons in the nucleus of
\(Li\)
. \(Z\) of
\(Li\)
.
3
1
2
0
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