हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Diagrammatically Represent the Transfer of Electrons.

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प्रश्न

Diagrammatically represent the transfer of electrons.

आकृति
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उत्तर

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अध्याय 4: Atoms, Molecules and Radicals - Additional questions

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 4 Atoms, Molecules and Radicals
Additional questions | Q 7.4

संबंधित प्रश्न

How many atoms are present in a H2S molecule?


Write the molecular formulae of Iron (III) sulphide:


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


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


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


Fill in the blank

_______ is a triatomic molecule.


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


Calculate the number of molecules present in a drop of chloroform (CHCl3) weighing 0.0239 g.

(Atomic masses : C = 12 u ; H = 1 u ; Cl = 35.5 u)


If 1 gram of sulphur dioxide contains x molecules, how many molecules will be present in 1 gram of oxygen ?

(S = 32 u ; O = 16 u)


What is the number of electrons donated by a magnesium atom and number of electrons accepted by a sulphur atom during their chemical combination?


‘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−].


Calculate the number of water molecules present in one drop of water which weighs 0.18 g.


Express each of the following in kilograms

58.34 g


Express each of the following in kilograms

58.34 g


Express each of the following in kilograms

5.873×10−21g


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


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