The electronic configuration 1s²2s²2p⁶3s²3p¹ corresponds to the element Aluminum.
To break it down:
- The notation indicates the distribution of electrons in the atomic orbitals of the atom.
- The first part, 1s², means there are 2 electrons in the first energy level (1s orbital).
- The next set, 2s² and 2p⁶, signifies that there are 2 electrons in the 2s orbital and 6 electrons in the 2p orbital, filling the second energy level completely.
- Moving to the third energy level, there are 2 electrons in the 3s orbital (3s²) and 1 electron in the 3p orbital (3p¹).
Counting the total number of electrons, we have:
- 2 (from 1s) + 2 (from 2s) + 6 (from 2p) + 2 (from 3s) + 1 (from 3p) = 13 electrons.
Since the atomic number, which indicates the number of protons, is also 13, this confirms that the element with this electronic configuration is Aluminum (Al), found in group 13 of the periodic table.