Question

Aluminum (Al) atom has ground-state electron configuration as :

• A. $1s^{2}2s^{2}2p^1$
• B. $1s^{2}2s^{2}2p^{6}3s^1$
• C. $1s^{2}2s^{2}2p^{6}3s^{2}3p^1$
• D. $1s^{2}2s^{2}2p^{6}3s^{2}3p^{1}3p^{12}$
• E. $1s^{2}2s^{2}2p^{6}3s^{2}3p^{1}3p^{12}4p^6$

Answer 1

The correct option is C $1s^{2}2s^{2}2p^{6}3s^{2}3p^1$

Aluminum $\left(Al\right)$ atom has ground-state electron configuration of $1s^{2}2s^{2}2p^{6}3s^{2}3p^1$.