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The electron configuration of an atom is 1s22s22p63s23p3. The atomic number of the atom is
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The electron configuration of an atom is 1s22s22p63s23p3. The atomic number of the atom is

User Pardeep
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The atomic number is the number of electrons the atom has if it is a neutral element. Assuming the electron configuration is of a neutral atom, you just add the number of electrons together to get an atomic number of 15.
User Sameet
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