हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

State the Atomicity of the Following: Oxygen - Chemistry

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प्रश्न

State the atomicity of the following:

Oxygen

एक शब्द/वाक्यांश उत्तर
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उत्तर

Diatomic

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अध्याय 4: Atomic Structure - Exercise

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संबंधित प्रश्न

Write down the name of a compound represented by the following formula:

Al2(SO4)3


Write down the name of a compound represented by the following formula:

K2SO4


Give the name of the element present in the following compound:

Quick lime


Give the name of the element present in the following compound: 

Hydrogen bromide


State the term.

The number of atoms present in a molecule of an element _________


Define: Atomic number


Define: Mass number : 


Define: Atomic weight :


What is meant by atomicity ? Explain with two examples.


What is the atomicity of the following ?

  1. Oxygen
  2. Ozone
  3. Neon
  4. Sulphur
  5. Phosphorus
  6. Sodium

Write the formulae of the following compounds. Also name the elements present in them.

  1. Water
  2. Ammonia
  3. Methane
  4. Sulphur dioxide
  5. Ethanol

In what form do noble gases occur in nature?


What do the following denote ?

  1. N
  2. 2N
  3. N2
  4. 2N2

What is the difference between the molecule of an element and the molecule of a compound ? Give one
example of each.


Calculate the mass of 3.011 × 1024 atoms of carbon.


Why are the symbols and formulae of substances important?


Give one example of a triatomic molecule


State the main points of the contradiction of Dalton’s atomic theory by the Modern Atomic Theory.


Give a reason why –

Helium is considered monoatomic, but hydrogen a diatomic molecule.


State the atomicity of the following:

Neon


State the atomicity of the following:

Chlorine


State the atomicity of the following:

Sulphur


Which of the following is a short and scientific way of representing one molecule of an element or compound?


Classify the following molecules as the molecules of element or compound

1.  
2.  
3.  
4.  

Give any two examples for heterodiatomic molecules.


Derive the relationship between Relative molecular mass and Vapour density.


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