Question 1(i) Write the electron-dot structures for sodium, oxygen, and magnesium.(ii) Show the formation of Na2O and MgO by the transfer of electrons.(iii) What are the ions present in these compounds?

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Accepted Answer

(i) Electron-dot structures for sodium, oxygen, and magnesium are shown below:

Write the electron-dot structures for sodium, oxygen, and magnesium. NCERT Class 10 Science CBSE Solutions.

(ii) Formation of Na₂O

$\underset{\text{2,8,1}}{\text{Na}} \longrightarrow \underset{\text{2,8}}{\text{Na}^+} + \text{e}^-$

$\underset{\text{2,6}}{\text{O}} + 2\text{e}^- \longrightarrow \underset{\text{2,8}}{\text{O}^{2-}}$

Show the formation of Na2O by the transfer of electrons. NCERT Class 10 Science CBSE Solutions.

Formation of MgO

$\underset{\text{2,8,2}}{\text{Mg}} \longrightarrow \underset{\text{2,8}}{\text{Mg}^{2+}} + 2\text{e}^-$

$\underset{\text{2,6}}{\text{O}} + 2\text{e}^- \longrightarrow \underset{\text{2,8}}{\text{O}^{2-}}$

Show the formation of MgO by the transfer of electrons. NCERT Class 10 Science CBSE Solutions.

(iii) Ions present in these compounds are:

Compound	Cation	Anion
Na₂O	Na⁺	O^2-
MgO	Mg²⁺	O^2-

Metals and Non-metals — Question 1

Question 1