Indicate the total number of electrons in the external energy level and the number of energy levels in the atoms of the elements
| November 14, 2020 | Education
Indicate the total number of electrons in the external energy level and the number of energy levels in the atoms of the elements of the following groups:
a) alkali metals;
c) halogens;
b) alkaline earth metals;
d) noble gases.
a) alkali metals; One electron at the outer energy level, the number of energy levels from 1 to 7.
c) halogens; Seven electrons in the outer energy level, the number of energy levels from 1 to 7.
b) alkaline earth metals; Two electrons in the outer energy level, the number of energy levels from 1 to 7.
d) noble gases. Eight electrons (two for Helium) at the external energy level, the number of energy levels from 1 to 7.
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