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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा १०

The Atomicity of phosphorous is ______ - Science

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प्रश्न

The Atomicity of phosphorous is ______

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उत्तर

The atomicity of phosphorous is 4.

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अध्याय 7: Atoms and Molecules - Evaluation [पृष्ठ १०३]

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सामाचीर कलवी Science [English] Class 10 SSLC TN Board
अध्याय 7 Atoms and Molecules
Evaluation | Q II. 10. | पृष्ठ १०३

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


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

CaCl2


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

CaCO3


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


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


Define: Atomic number


Define: Atomic weight :


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

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


Work out the formula for magnesium hydrogencarbonate.


What are (i) ionic compounds, and (ii) molecular compounds ? Give two examples of each type of compounds.


The cation of an element has :


An element X forms the following compounds with hydrogen, carbon and oxygen :

H2X, CX2, XO2, XO3

State the three valencies of element X which are illustrated by these compounds.


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


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.


State the atomicity of the following:

Neon


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.


Which of the following contains maximum number of molecules?


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