Question

what element in period 3 has all 8 valence electrons

Answer 1

The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon.

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Answer 2

Argon is the element in period 3 that has all 8 valence electrons.

• Elements that possess 8 valence electrons are called noble gases. They are elements that have completely filled electron shells.

• Elements in this category include argon, neon, helium, krypton, xenon etc.

• Period refers to the horizontal arrangement of elements on the periodic table. Elements in the period 3 are as follows: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon.

• Argon is a noble gas i.e. have all 8 valence electrons. Therefore, it is the element in period 3 that has all 8 valence electrons.

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