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Chemistry
Chemistry
Problem
Assertion :
Na
+
\text{Na}^+
Na
+
and
Al
3
+
\text{Al}^{3+}
Al
3
+
are isoelectronic but ionic radius
Al
3
+
\text{Al}^{3+}
Al
3
+
is less than that of
Na
+
\text{Na}^+
Na
+
. Reason : The magnitude of effective nuclear charge on the outershell electrons in
Al
3
+
\text{Al}^{3+}
Al
3
+
is greater than that in
Na
+
\text{Na}^+
Na
+
.
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