Q. The order of increasing sizes of atomic radii among the elements O, S, Se and As is :
A. As < S < O < Se
B. Se < S < As < O
C. O < S < As < Se
D. O < S < Se < As
Answer: O < S < As < Se
We will be happy to hear your thoughts
A. As < S < O < Se
B. Se < S < As < O
C. O < S < As < Se
D. O < S < Se < As
Answer: O < S < As < Se