HARDMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryPeriodic PropertiesAchiever Section
Of the following orders of relative sizes, choose the incorrect order
A.Li < Na < K
B.Al³⁺< Mg²⁺ < Na⁺
C.C < Si < Al
D.Mg < Al < Na✓ Correct
Explanation
Since atomic radius decreases as we go from left to right in a period and increases as we go from top to bottom in a group of a periodic table.
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