Correct option is B
The electron configuration of an aluminum atom, which has an atomic number of 13, is 2, 8, 3. This means that the aluminum atom has 2 electrons in the first energy level (K-shell), 8 electrons in the second energy level (-Lshell), and 3 electrons in the third energy level (M-shell). This distribution follows the principle that the electrons fill the lowest energy levels first before moving to higher levels.
Thus, the correct electron distribution in an aluminum atom is 2, 8, 3.
