Which statement about the Periodic Table is correct?
A.
The elements are arranged in order of increasing relative atomic mass.
B.
The reactivity of the elements in Group I and in Group VII increases as the groups are descended.
C.
Elements in the same period have similar chemical properties.
D.
Elements in Group II form ions with a 2+ charge.
Exam No：0620_s25_qp_11 Year：2025 Question No：20
Answer:
D
Knowledge points:
9.1.1.1. thermal conductivity
Solution:
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