GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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readily form positive ions
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have either a positive or negative charge
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outermost energy level is missing one electron
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outermost energy level is full
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Detailed explanation-1: -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.
Detailed explanation-2: -The noble gases (Group 18) are located in the far right of the periodic table and were previously referred to as the “inert gases” due to the fact that their filled valence shells (octets) make them extremely nonreactive.
Detailed explanation-3: -All of the noble gases have full outer shells with eight electrons.
Detailed explanation-4: -Noble gases are chemically inert because they have completely filled orbitals in the valence shell which leads to stable electronic configuration.
Detailed explanation-5: -Group 18 elements (helium, neon, and argon) have a full outer, or valence, shell. A full valence shell is the most stable electron configuration. Elements in other groups have partially filled valence shells and gain or lose electrons to achieve a stable electron configuration.