Noble gasses are historically known as inert gasses - so true
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The noble gases were once called inert gases because until about 1960, no compounds of them had been discovered.
TRUE (apex)
True. Noble gases are inert because they have a full outer electron shell, making them stable and unlikely to react with other elements.
Group-18 elements do not react. They are noble gases.They are inert in nature.Noble gases are unlikely to react. They are in the 18th period of the periodic table. They are called inert gasses too.