SC4b Atomic Number and the Periodic Table
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (6 张)
group?
column in the periodic table
period?
row in the periodic table
how are elements sorted in a period?
order of atomic number
how are elements sorted in a group?
elements with similar properties
Mendeleev put elements in order of increasing atomic mass but the modern periodic table is in order of atomic number why?
information found later: ~more information about atomic structure ~greater number of elements, which might make spotting the patterns and arranging the table easier ~more knowledge about the properties of the elements
ESQ - give an example, other than iodine and tellurium, of a pair of elements that would be in the wrong place if ordered by relative atomic mass. (1 mark) suggest why ordering by relative atomic mass would be incorrect. (1 mark)
argon and potassium they would be in the wrong groups/they would be in the wrong period/they would not be with similar elements