CBSE 2025 · Region 4 · Set 3 · Q3 · 1 mark

An element 'M' has $\displaystyle 25$% of the electrons filled in the third shell as in the second shell. The element ' M ' is :

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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.

An element 'M' has $\displaystyle 25$% of the electrons filled in the third shell as in the second shell. The element ' M ' is :

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