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10217362

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Iron is a chemical element with symbol Fe and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in front of oxygen, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust.

Explanation:

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Answer:

iron:

group 8

4 orbitals

electrons per shell:2,8,14,2

26 electrons

8 valence electrons.

Explanation:

iron is in the 8th group in the periodic table because it is a transition metal and their valence shells have 8 electrons.

It has 4 electron shells because the first one can hold two electrons, the second has 8 and so on.

The total number of electrons is 26, which is equal to number of protons.

Valence electrons are in the outermost shell.

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