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Subjects
Science State Board
Class 9
Atomic structure
Atomic particles - Rutherford’s and Bohr’s models
13.
Number of electrons and protons: Numerical based questions
Exercise condition:
2
m.
1
.
Find out the number of electrons revolve around the nucleus of
\(Cr\)
. \(Z\) of
\(Cr\)
=
24
.
Answer:
2
.
Calculate the number of protons in the nucleus of
\(Li\)
. \(Z\) of
\(Li\)
=
3
Answer:
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