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What element is represented by the following electron configuration:

1s22s22p63s23p64s23d4

Question 2 options:

Cr

Ca

Ge

Ar

1 Answer

3 votes
For better representation, let me rewrite the electronic configuration:

1s²2s²2p3s²3p4s²3d

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.
User Nayara
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