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

The Atomicity of phosphorous is ______

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

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

संबंधित प्रश्‍न

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: 

Hydrogen bromide


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

Baking powder


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

Potassium sulphate


 Define: Atomic number


Define: Mass 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

In what form does oxygen gas occur in nature ?


Work out the formula for magnesium hydrogencarbonate.


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.


Give a reason why –

Helium is considered monoatomic, but hydrogen a diatomic molecule.


Give a reason why –

Ozone is considered triatomic, but phosphorus a tetratomic molecule.


State the atomicity of the following:

Oxygen


State the atomicity of the following:

Chlorine


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?


State true of false. If false, give the correct statement.

NaCl represents one molecule of sodium chloride.


Which of the following is a triatomic molecule?


If a molecule is made of similar kinds of atoms, then it is called ______ atomic molecule.


Derive the relationship between Relative molecular mass and Vapour density.


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