Using periodic trends, arrange the following elements in order of increasing atomic or ionic radius:
(a) S, Se, As
(b) O, P, S
(c) Ar, Na, Cl, Al
(d) Mg, Ca, S
(e) F-, Na+, N3-
(f) Cl-, K+, S2-
Using periodic trends, arrange the following elements in order of decreasing first ionization energy:
(a) Na, Ca, Rb, Cl, He
(b) Cs, Ca, Ne, Na, Ar
Decide which has the larger negative electron affinity:
(a) C or F
(b) As or Br
(c) F or Li
(d) Cl or S
(e) Se or K