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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

The Valency of Sodium is One, Write the Molecular Formula For Sodium Carbonate ?

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प्रश्न

The valency of sodium is one, write the molecular formula for sodium carbonate ?

एक शब्द/वाक्यांश उत्तर
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उत्तर

sodium carbonate : Na2CO3

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अध्याय 4: Atomic Structure - Exercise

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एस पी सिंग Concise Chemistry [English] Class 7 ICSE
अध्याय 4 Atomic Structure
Exercise | Q 10.3

संबंधित प्रश्न

Write the molecular formulae of Magenesium oxide :


Write the molecular formulae of Iron (III) sulphide:


Write the molecular formulae of Aluminium sulphate :


The valency of sodium is one, write the molecular formula for sodium sulphate ?


The valency of sodium is one, write the molecular formula for sodium hydroxide ?


What is a molecule ? Explain with an example.


Fill in the following blanks :

1 mole contains .............. atoms, molecules or ions of a substance.


Which contains more molecules, 10 g of sulphur dioxide (SO2) or 10 g of oxygen (O2) ?

(Atomic masses : S = 32 u ; O = 16 u)


‘Dilute hydrochloric acid is added to sodium hydroxide’. Give a word equation and a molecular equation of the same. Is the equation written, a balanced equation. Give reasons.


State the correct formula of the following from the option given:

Ammonium sulphate


Name the following:

The compound formed when iron [Fe2+] combines with oxygen [O2−].


Name the following:

A non-metal which forms a polyatomic molecule with more than three atoms.


Molecule containing more than three atoms are known as ______.


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

Atoms cannot exist alone. They can only exist as groups called molecules.


Define molecule.


How many atoms are present in a PO4 3– ion?


What is the fraction of the mass of water due to neutrons?


Express each of the following in kilograms

5.84 × 10−3 mg


A group of atoms carrying a fixed charge on them is called ————.


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