The CORRECT order of increasing radii of the elements Na, Si, Al and P is ……………
The CORRECT order of increasing radii of the elements Na, Si, Al and P is ……………
(A) Si < Al < P < Na
(B) Al < Si < P < Na
(C) P < Si < Al < Na
(D) Al < P < Si < Na
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Correct option is: (C) P < Si < Ai < Na
As we move along a period from left to right the radii of element decrease. Na, Si, Al and P are third period elements
Therefore, the order of radii is Na > Al > Si > P
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