Assertion: The ionic radii of O and Mg are same.

Reason: Both O and Mg are isoelectronic species.

Question

Assertion: The ionic radii of O and Mg are same.

Reason: Both O and Mg are isoelectronic species.

Canvas Classes · Accepted Answer

Strategy:
 Isoelectronic species have the same number of electrons but different nuclear charges (). A higher  creates a stronger attraction to the electrons, resulting in a smaller radius.

Step 1: Evaluate Reason (R)
-  ( electrons)
-  ( electrons)
- Both share the same number of electrons. (True)

Step 2: Evaluate Assertion (A)
-  has 8 protons pulling 10 electrons ().
-  has 12 protons pulling 10 electrons ().
- Because Magnesium has a much higher nuclear charge, its ionic radius () is signi

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