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प्रश्न
The atoms of which of the following pair of elements are most likely to exist in free state ?
पर्याय
hydrogen and helium
argon and carbon
neon and nitrogen
helium and neon
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उत्तर
helium and neon
Atoms of helium and neon exist in a free state because they are inert gases and chemically inactive.
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संबंधित प्रश्न
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Give the qualitative and quantitative meaning of the term ‘symbol’.
______ of some elements are derived from Latin or Greek names of the elements.
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