Question

The electronic, configuration of an element is $1s^2 2s^2 2p^6, 3s^2 3p^6 3d^5 4s^1$. This represents its

• A. excited state
• B. ground state
• C. cationic form
• D. anionic form

Answer 1

Answer: (B)

The electron configuration of an atom shows the number of electrons in each sublevel in each energy level of the ground state atom. Here, $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{2} 3 d^{5} 4 s^{1}$ is ground state electronic configuration of $Cr$.