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1s2 2S2 SP5

1s2 2s2 2p5 what element is represented by the electron configuration

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Roman C. | Masters of Education Graduate with Mathematics ExpertiseMasters of Education Graduate with Mathe...
4.9 4.9 (331 lesson ratings) (331)

Here I assume you have only the basic periodic table which doesn't mention electron configurations.

1s2 2s2 2p5

This reads that there are 2 electrons in the 1s subshell, 2 electrons in the 2s subshell, and 5 electrons in the 2p subshell. This is a total of 2+2+5 = 9 electrons. So for a neutral atom, we must have Z=9.

Flourine has atomic number 9.

Asha B. | I love Biology and Science! Everyone should!I love Biology and Science! Everyone sho...
4.7 4.7 (21 lesson ratings) (21)

Flourine :)

Using the periodic table helps

this webpage of a periodic table with the electron configurations may help you

Good luck!