electron is, on average, close to the nucleus: an electron in a 2s orbital or an electron in a 3s orbital is electrons . The electron in 2s orbital are closer to the nucleus than those of 3s orbital.
The 3s orbital electron posses more energy than those electrons in 2s orbital. The size of orbital is determine by the principal quantum number n. The higher the value of n , the farther the orbital from the nucleus . And same as the electron situated to orbital.
Thus, electron is, on average, close to the nucleus: an electron in a 2s orbital or an electron in a 3s orbital is electrons . The electron in 2s orbital are closer to the nucleus than those of 3s orbital.
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