Question

If an atom has twelve electrons, how many electrons are in the n=1 energy level? How many electrons are in the n=2 energy level? How many electrons are in the n=3 energy level?

options: 7,3,0,5,1,8,4,2,6

Answer 1

Electronic configuration will be

\(\sf 1s^2~2s^2~2p^6~3s^2\)

Answer 2

So in energy level 1, there will be 2 electrons, in energy level 2, there will be 2+6=8 electrons and energy level 3 there will be 2 electrons

Answer 3

Got it ?

Answer 4

Thank you!

Answer 5

you probably didn't notice, but you posted your \(\large\sf\color{blue}{\underline{\href{ http:///openstudy.com/study#/groups/chemistry}{Chemistry}}}\) question in the Biology section.
Next time when you ask a question, check if you're in the right section :)

Answer 6

The subject I am doing is biology so naturally i posted it here

Answer 7

but thanks for the info anyways

Answer 8

\(\rlap{\color{blue}{\huge\bigstar}\huge \color{blue}{ \text{You're Most Welcome! }}\color{blue}\bigstar}{\; \color{aqua}{\huge\bigstar}\huge \color{aqua}{\text{You're Most Welcome! }}\color{aqua}\bigstar}\)
\(~~~~~~~~~~~~~~~~~~~~~~~~~~~\color{green}{\huge\ddot\smile}\color{blue}{\huge\ddot\smile}\color{pink}{\huge\ddot\smile}\color{red}{\huge\ddot\smile}\color{yellow}{\huge\ddot\smile}\)

Answer 9

love the graphics!!! <3

Answer 10

\(\huge\sf\color{green}{\text{✌ﾟ\(\ddot\smile\) ✌ﾟ}}\)