An atom can be described as chemically inactive (will not form bonds) if its outermost electron shell contains ..... electrons.

CHEMISTRY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

An atom can be described as chemically inactive (will not form bonds) if its outermost electron shell contains ____ electrons.

A	8
B	9
C	1
D	None of the above

Explanation:

Detailed explanation-1: -Therefore, if the outermost shell of an atom has eight electrons, it is called inert gas and is chemically unreactive.

Detailed explanation-2: -We should start with the atoms that have atomic numbers between 1 and 18. There is a 2-8-8 rule for these elements. The first shell is filled with 2 electrons, the second is filled with 8 electrons, and the third is filled with 8. You can see that sodium (Na) and magnesium (Mg) have a couple of extra electrons.

Detailed explanation-3: -Noble gases are nonreactive, nonmetallic elements in group 18 of the periodic table. They include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). Noble gases are the least reactive of all known elements, because with eight valence electrons, their outer energy levels are full.

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GENERAL KNOWLEDGE

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CHEMISTRY