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This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
2
no. electron shells are just what contain the electrons. the inner most shell contains 2, then 8 and so on.
The outer electron shells of the halogens contain seven electrons, and need one more electron to have eight and become stable.
Noble gases are very stable because their outermost electron shells contain the maximum number of electrons that those outermost shells can possess. This is a correct statement. Yes.
The element with 38 electrons is Strontium (Sr). Strontium is an Alkaline Earth Metal in Period 5 of the Periodic Table. Strontium has 38 electrons, 5 electron shells and 2 electrons in the outer shell.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
2
no. electron shells are just what contain the electrons. the inner most shell contains 2, then 8 and so on.
The outer electron shells of the halogens contain seven electrons, and need one more electron to have eight and become stable.
Noble gases are very stable because their outermost electron shells contain the maximum number of electrons that those outermost shells can possess. This is a correct statement. Yes.
francium only has one valence electron (one electron in the outermost shell).
The electron configuration of iron is [Ar]3d64s2. The electron shells contain 2, 8, 14 and 2 electrons.
Sr has 38 protons, 38 electrons, and 50 neutrons.
Atoms with outer electron shells that contain 8 electrons tend to be stable and chemically in reactive, or inert.
Magnesium has three electron shells. The electron configuration is 2,8,2
These atoms are very stable and unreactive.