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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 Sulphate ? - Chemistry

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प्रश्न

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

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उत्तर

sodium sulphate : Na2S04

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अध्याय 4: Atoms, Molecules and Radicals - Exercise

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 4 Atoms, Molecules and Radicals
Exercise | Q 10.2

संबंधित प्रश्न

What does 2C02 represent ?


Write the molecular formulae of Iron (II) sulphide :


Write the molecular formulae of Aluminium sulphate :


State the term

The symbolic representation of a molecule ______


Fill in the following blanks :

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


If one mole of nitrogen molecules weighs 28 g, calculate the mass of one molecule of nitrogen in grams.


How many units of charge are developed on each atom?


‘Atoms of the same element or different from Dalton’s atomic theory by the Modern Atomic Theory.
Give two examples each of –

  • Atoms of the same element
  • Atoms of different elements combining to form a molecule.

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

Sodium bisulphite


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

Ammonium sulphate


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

Aluminium phosphate


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

Copper [II] nitrate


Name the following:

A molecule of a compound containing two oxygen atoms and one nitrogen atom.


Name the following:

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


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?


Express each of the following in kilograms

58.34 g


Express each of the following in kilograms

0.584 g


______ can be formed by the same or different kinds of atoms.


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