In an atom all the first four shells are complete. What is its atomic number .
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The atomic number is 60
Explanation:
According to Bohr's law,
The there are 4 shells which are K,L,M,N
K= 2×(1)²=2
L= 2×(2)²=8
M=2×(3)²=18
N=2×(4)²=32
In an atom, the first 4 shells are completed with 2,8,18,32 then the atomic number of the atom will be=(2+8+18+32)=60
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