Question

question 2 (1 point)
listen
the element that has the electronic configuration of 1s²2s²2p⁶3s²3p⁶

1. co
2. ca
3. k
4. ar

Explanation:

The electronic configuration \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}\) corresponds to the noble gas Argon (\(Ar\)). Noble gases have completely filled electron shells, which is represented by this configuration. Cobalt (\(Co\)) has a more complex configuration involving \(d\) - orbitals (\(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{7}\)). Calcium (\(Ca\)) has the configuration \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}\). Potassium (\(K\)) has the configuration \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{1}\).

Answer:

1. Ar