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Science · 2025 · 1 mark
CBSE 2025 · Region 4 · Set 3 · Q3
An element 'M' has 25% of the electrons filled in the third shell as in the second shell. The element ' M ' is:
An element 'M' has $\displaystyle 25$% of the electrons filled in the third shell as in the second shell. The element ' M ' is :
Official answer
(B)
Magnesium
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