sunitakumari5983 sunitakumari5983

10-12-2020
Chemistry

contestada

In the ground state, an atom of which element has seven valence
electrons?
1.
sodium
2.
phosphorus
3.
nitrogen
4.
fluorine

Respuesta :

chemhelperAZ chemhelperAZ

02-03-2021

Answer:

Fluorine

Explanation:

Fluorine has 9 total electrons. The first two are in the 1s level, and the remaining electrons are on the outer level of the atom, with 2 in the s level and 5 in the p level. The electron configuration is 1s2 2s2 2p5.

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