A) \[Ar+{{K}^{+}}<C{{a}^{2+}}\]
B) \[C{{a}^{2+}}<Ar<{{K}^{+}}\]
C)
\[C{{a}^{2+}}<{{K}^{+}}<Ar\] D)
\[{{K}^{+}}<Ar<C{{a}^{2+}}\]
Correct Answer:
C Solution :
\[Ar,{{K}^{+}}\] and \[C{{a}^{2+}}\] are isoelectronic i.e. with same number of electrons, 18. For isoelectronic species ionic radii decreases with increase in effective (relative) positive charge. Also Ar, K and Ca belong to the same period (3rd period).
You need to login to perform this action.
You will be redirected in
3 sec