返回卡包市场
ECM: 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。
卡片总数: 4 张•内容版本: v4•公开卡包•更新时间: 8/1/2026
卡片预览 (4 张)
#1
正面 (问题)
what group does hydrogen belong to?
背面 (解答)
hydrogen does not belong to any group
#2
正面 (问题)
name group 1, 2, 3-12, 17 and 18
背面 (解答)
group 1: alkali metals group 2: alkaline earth metals group 3-12: transition metals group 17: halogens group 18: noble gases
#3
正面 (问题)
elements with similar _______ are arranged in the same group
背面 (解答)
chemical properties
#4
正面 (问题)
properties of elements are different across the period. they gradually change from properties of _______ to ________
背面 (解答)
metals to non-metals