Question

(15 Points!) Match the electron configurations with the correct element name.



$1s^22s^22p^63s^23p^63d^74s^2$

$1s^22s^22p^63s^23p^63d^{10} 4s^24p^64d^15s^2$

$1s^22s^22p^63s^23p^63d^{10}4s^24p^64d^{10}4f^45s^25p^66s^2$

$1s^22s^22p^63s^23p^63d^{10}4s^24p^2$


Choices:

Cobalt (Co)
Germanium (Ge)
Yttrium (Y)
Neodymium (Nd)

Answer 1

Answer:

Using a lil common sense bcz I have no book sense on this...

Explanation:

Cobalt (Co) - 1

Germanium (Ge) - 4

Yttrium (Y) - 2

Neodymium (Nd) - 3

I Just looked at which comes before which in the periodic table and obv the one with less length from (1-4) is the lowest in the periodic table continuing... yah digg... lol