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Science · 2026 · 2 marks
CBSE 2026 · Region 3 · Set 1 · Q25
Show the formation of the following ionic compounds by transfer of electrons between the combining atoms: (i) Sodium oxide ( Na_2 O ) (ii) Magnesium…
Show the formation of the following ionic compounds by transfer of electrons between the combining atoms :
(i)
Sodium oxide ( $\displaystyle \mathrm{Na}_{2} \mathrm{O}$ )
(ii)
Magnesium chloride $\displaystyle \left(\mathrm{MgCl}_{2}\right)$ (Given : Atomic number : $\displaystyle \mathrm{Na}=11, \mathrm{Mg}=12, \mathrm{O}=8, \mathrm{Cl}=17$ )
Marking-scheme solution
(i)
(ii)
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CBSE Class 10 Science past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.