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प्रश्न
In what form do noble gases occur in nature?
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उत्तर
Noble gases occur in nature as a monoatomic gas.
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संबंधित प्रश्न
Write down the name of a compound represented by the following formula:
CaCO3
Define: Atomic number
Define: Atomic weight :
Write the formulae of the following compounds. Also name the elements present in them.
- Water
- Ammonia
- Methane
- Sulphur dioxide
- Ethanol
What is the difference between the molecule of an element and the molecule of a compound? Give one example of each.
State the main points of the contradiction of Dalton’s atomic theory by the Modern Atomic Theory.
Give a reason why –
Ozone is considered triatomic, but phosphorus a tetratomic molecule.
Which of the following is a short and scientific way of representing one molecule of an element or compound?
Two elements sometimes can form more than one compound.
Which of the following contains maximum number of molecules?
