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in Chemistry by (32.6k points)
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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

2 Answers

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Best answer

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

+1 vote
by (32.4k points)

(C) P < Si < Al < Na

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