WBBSEClass XPhysical ScienceIonic and Covalent Bond02 Mark2023 Moderate

QQuestion

Show by the help of a property of sodium chloride that sodium chloride is composed of ions.

OR

Show how ionic bond is formed in sodium chloride. (Atomic numbers of Na and Cl are 11 and 17 respectively)

Exam-ready answer 02 Mark

Answer

Sodium chloride (NaCl) conducts electricity when dissolved in water, indicating it is composed of ions. Upon dissolution, NaCl dissociates into sodium ions (Na⁺) and chloride ions (Cl⁻), which are free to move in the solution, allowing it to conduct electric current. This behaviour confirms its ionic nature.

OR

Sodium chloride (NaCl) is formed through the transfer of an electron from sodium to chlorine, resulting in the formation of Na⁺ and Cl⁻ ions, which are held together by ionic bonds.

Electron Dot structure of Sodium chloride

Was this answer helpful?

Related Questions

More WBBSE Moderate level questions

1/12

Show by drawing a Lewis dot diagram of CH4 that CH4 is formed by covalent bonds. (Atomic numbers of H and C are 1 and 6 respectively)

Moderate 02 Mark

How is ionic bond formed in sodium fluoride? (The atomic number of F and Na are 9 and 11 respectively). OR C has 4 electrons in its outermost shell and O has 6 electrons in its outermost shell. Draw the Lewis dot diagram of CO2 molecule.

Moderate 02 Mark

What type of chemical bond is present in NH3? Draw Lewis electron dot diagram of NH3. (The atomic number of H and N are 1 and 7 respectively)

Moderate 02 Mark

Liquid hydrogen chloride is unable to conduct electricity, but molten sodium chloride is able to conduct electricity — explain

Moderate 02 Mark

Explain why the melting point of sodium chloride is much greater than that of glucose.

Moderate 02 Mark

Draw electron-dot structure of calcium oxide. [Atomic numbers of Ca and O are 20 and 8 respectively]

Moderate 02 Mark

What type of chemical bond is present in MgCl2? How are the chemical bonds formed in MgCl2? (Atomic number of Mg and Cl are 12 and 17 respectively). [1+2] OR Explain why an aqueous solution of sodium chloride is the conductor of electricity but the aqueous solution of sugar or glucose is not. [3]

Moderate 03 Mark

Which compound is formed by the reaction of atmospheric nitrogen and oxygen as a result of lightning?

Easy 01 Mark

Mention one reason for the relative chemical inertness of N2. OR Of the two substances used for the production of urea one is carbon dioxide, what is the other?

Easy 01 Mark

Write whether the following statement is true or false: The formation of an ionic compound is made possible largely by the formation of a stable ionic network.

Easy 01 Mark

Why is the formula weight appropriately used instead of the molecular weight in the case of the ionic compounds?

Easy 02 Mark

Define the Octet rule. Give two examples of such compounds in which an exception to the Octet rule is observed. OR Write two important differences between ionic and covalent compounds.

Easy 02 Mark