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STD 11 - 3. Classification of elements and periodicity in properties — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 3. Classification of elements and periodicity in properties4 Marks
MCQ
$Na^+$, $Mg^{2+}$, $Al^{3+}$, $Si^{4+}$ are isoelectronics. Their ionic size follows the order
  • A
    $Na^+ < Mg^{2+} < Al^{3+} < Si^{4+}$
  • B
    $Na^+ > Mg^{2+} > Al^{3+} > Si^{4+}$
  • ✓
    $Na^+ < Mg^{2+} > Al^{3+} > Si^{4+}$
  • D
    $Na^+ > Mg^{2+} < Al^{3+} > Si^{4+}$
✓

Answer

Correct option: C.
$Na^+ < Mg^{2+} > Al^{3+} > Si^{4+}$
c

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