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Question
Which of the following elements has the same molecular mass as its atomic mass?
Which of the following elements has the same molecular mass as its atomic mass?
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Solution
The correct option is D
Neon is an element having the same molecular mass as its atomic mass.
Oxygen exists as O2 molecule, its molar mass will be double of its atomic mass.
Nitrogen exists as N2 molecule, its molar mass will be double of its atomic mass.
Chlorine exists as Cl2 molecule, its molar mass will be double of its atomic mass.
Noble gases like He, Ar, Ne, Kr, etc. have completely filled outer electronic configuration and do not react with other elements to form compounds, nor do they form a molecule with the same atom of theirs. Therefore, they exist in a monoatomic state and have the same atomic and molecular mass.
The correct option is D
Neon is an element having the same molecular mass as its atomic mass.
Oxygen exists as O2 molecule, its molar mass will be double of its atomic mass.
Nitrogen exists as N2 molecule, its molar mass will be double of its atomic mass.
Chlorine exists as Cl2 molecule, its molar mass will be double of its atomic mass.
Noble gases like He, Ar, Ne, Kr, etc. have completely filled outer electronic configuration and do not react with other elements to form compounds, nor do they form a molecule with the same atom of theirs. Therefore, they exist in a monoatomic state and have the same atomic and molecular mass.
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