3 years ago

What element has the same electron configuration of 1s2 2s2 2p6 3s2 3p6 ?

Chemistry

2 answers:

Kay [80]3 years ago

4 0

Answer:

Explanation:

1s2|2s2 2p6|3s2 3p6 means 2+2+6+2+6=18 electrones. Also it means the number in the table.

According to the №18 the requested element is Argon.

Sedbober [7]3 years ago

3 0

Hello ..

The element is Argon ..

here is a explanation as a video ..

https://youtu.be/2fDwwTnZ2UU

Thank u ..hope it helps ..

Please mark me as brainliest

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Good Morning I need help with this science work, please help it would mean a lot.

Kay [80]

That’s easy it would be B.

8 0

3 years ago

Write nuclear symbols for each of the isotopes Carbon-14 Cobalt-60 Gold-197 Uranium-235

Marina CMI [18]

Answer and explanation:

The nuclides with the same atomic number, but different mass numbers are isotopes.

So, in this case, each species will have the same atomic number and a different mass number, that will be the same that it is written in the name of the element:

$\begin{gathered} -\text{ Carbon-14:}C_6^{14} \\ \\ -\text{ Cobalt-60: }Co_{27}^{60} \\ \\ -\text{ Gold-197: }Au_{79}^{197} \\ \\ -\text{ Uranium-235: }U_{92}^{235} \end{gathered}$