Periodic Table · JEE Main previous year questions

2010 1 question

1. Q632010 · 25 Apr 2010 · Shift 1

   The correct sequence which shows decreasing order of the ionic radii of the elements is

   1. A.$\mathrm{A}{\mathrm{l}}^{3+}>\mathrm{M}{\mathrm{g}}^{2+}>\mathrm{N}{\mathrm{a}}^{+}>{\mathrm{F}}^{-}>{\mathrm{O}}^{2-}$
   2. B.$\mathrm{N}{\mathrm{a}}^{+}>\mathrm{M}{\mathrm{g}}^{2+}>\mathrm{A}{\mathrm{l}}^{3+}>{\mathrm{O}}^{2-}>{\mathrm{F}}^{-}$
   3. C.$\mathrm{N}{\mathrm{a}}^{+}>{\mathrm{F}}^{-}>\mathrm{M}{\mathrm{g}}^{2+}>{\mathrm{O}}^{2-}>\mathrm{A}{\mathrm{l}}^{3+}$
   4. D.${\mathrm{O}}^{2-}>{\mathrm{F}}^{-}>\mathrm{N}{\mathrm{a}}^{+}>\mathrm{M}{\mathrm{g}}^{2+}>\mathrm{A}{\mathrm{l}}^{3+}$
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   Answer: D