What element is represented by the following electron configuration:

1s22s22p63s23p64s23d4

Question 2 options:

Cr

Ca

Ge

Ar

For better representation, let me rewrite the electronic configuration:

1s ² 2s ² 2p ⁶ 3s ² 3p ⁶ 4s ² 3d ⁴

The exponents represent the number of electrons in the designated subshell. Thus, the total number of electrons are:

# of electrons = 2+2+6+2+6+2+4 = 24

Assuming this is in neutral state, the element with an atomic number of 24 is Chromium. Thus, the answer is Cr.