阿摩線上測驗
9. Which statement is correct?
(A) Atomic radius decreases down group 17.
(B) First ionization energy decreases down group 1.
(C) Atomic radius increases across period 3 from Na to Cl.
(D) First ionization energy decreases across period 3 from Na to Cl.
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統計： A(0), B(3), C(0), D(0), E(0) #3217455
統計： A(0), B(3), C(0), D(0), E(0) #3217455
