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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता १०

Define: Atomicity. - Science

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प्रश्न

Define: Atomicity.

एका वाक्यात उत्तर
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उत्तर

The number of atoms present in the molecule is called atomicity.

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पाठ 7: Atoms and Molecules - Evaluation [पृष्ठ १०४]

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सामाचीर कलवी Science [English] Class 10 SSLC TN Board
पाठ 7 Atoms and Molecules
Evaluation | Q VI. 3. | पृष्ठ १०४

संबंधित प्रश्‍न

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

Hydrogen bromide


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

Baking powder


Calculate the number of molecules of sulphur (S8) present in 16 g of solid sulphur.


State the term.

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


Define: Atomic number


 Define: Atomic number


Define: Mass number : 


What is meant by atomicity ? Explain with two examples.


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 does oxygen gas occur in nature ?


In what form do noble gases occur in nature?


Work out the formula for magnesium hydrogencarbonate.


An element A forms an oxide A2O5.

What is the valency of element A ?


Correct the following statement:

A molecule of sulphur is monoatomic.


Why are the symbols and formulae of substances important?


Explain the term – molecules. Give three examples of atoms of the same element forming a molecule. State the atomicity of the same.


Give one example of a triatomic molecule


Give one example of a polyatomic molecule.


Give a reason why –

Ozone is considered triatomic, but phosphorus a tetratomic molecule.


State the atomicity of the following:

Argon


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.  

Which of the following is a triatomic molecule?


Two elements sometimes can form more than one compound.


Derive the relationship between Relative molecular mass and Vapour density.


Write any two classifications of a molecule.


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