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प्रश्न
What are the atomic numbers of elements whose outermost electrons is represented by 2p3.
उत्तर
2p3
Completing the electron configuration of the element as
1s2 2s2 2p3.
∴ Number of electrons present in the atom of the element = 2 + 2 + 3 = 7
∴ Atomic number of the element = 7
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