本课配套习题挑战模式1/5
单选题
难度系数:
1.右图表示碱金属的某些性质与核电荷数的变化关系,下列各性质中不符合图示关系的是
A: 还原性 |
B: 与水反应的剧烈程度 |
C: 熔点 |
D: 原子半径 |
一次做对,真牛!
+5奖励规则>
- 提示1:6ZqP552A56Kx6YeR5bGe55qE5qC455S16I235pWw5aKe5Yqg77yM5Lmf5bCx5piv5ZGo5pyf6KGo5Lit5LuO5LiK5b6A5LiL77yM5YWD57Sg55qE6YeR5bGe5oCn5aKe5by677yM5Y6f5a2Q5Y2K5b6E5aKe5aSn44CC
- 提示2:54aU5rK454K56YCQ5riQ5YeP5bCP44CC
- 答案:Qw==
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
本课配套习题挑战模式2/5
单选题
难度系数:
2.下列碱金属元素中,密度最小、熔点最高的是
A: Li |
B: Na |
C: K |
D: Cs |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY6ICD5p+l56Kx6YeR5bGe5YWD57Sg55qE54mp55CG5oCn6LSo6YCS5Y+Y6KeE5b6L44CC
- 答案:QQ==
56Kx6YeR5bGe5YWD57Sg5Lit77yM5LuO5LiK5Yiw5LiL77yM6YeR5bGe5Y2V6LSo55qE54aU5rK454K56YCQ5riQ6ZmN5L2O44CC5Zug5q2k54aU54K55pyA5aSn55qE6YeR5bGe5Li66YeR5bGe6ZSC44CC
本课配套习题挑战模式3/5
单选题
难度系数:
3.下列关于碱金属某些性质的排列中正确的是
A: 密度:Li<Na<K<Rb<Cs |
B: 原子半径: Li<Na<K<Rb<Cs |
C: 熔点、沸点:Li<Na<K<Rb<Cs |
D: 还原性:Li>Na>K>Rb>Cs |
一次做对,真牛!
+5奖励规则>
- 提示1:5q2k57G76aKY55uu5Y+v5Lul5LuO6Ieq5bex54af5oKJ55qE5oCn6LSo5byA5aeL5o6S6Zmk44CC5Y6f5a2Q5Y2K5b6E5LuO5LiK5Yiw5LiL5aKe5aSn77yM6ICM6L+Y5Y6f5oCn5LiO6YeR5bGe5oCn5ZCM5q2l77yM5LuO5LiK5Yiw5LiL5YeP5byx44CC
- 答案:Qg==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.下列关于碱金属元素的叙述错误的是
A: 随核电荷数递增,碱金属单质的熔沸点逐渐减小 |
B: 随核电荷数递增,碱金属单质的密度逐渐增大(Na、K反常) |
C: 碱金属元素包括F、Cl、Br、I、At五种元素 |
D: 碱金属元素的原子最外层都只有一个电子 |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY6L6D5Li6566A5Y2V77yM6YCa6L+H56Kx6YeR5bGe5YWD57Sg55qE57uE5oiQ5L6/5Y+v5Lul6YCJ5oup5Ye65q2j56Gu55qE562U5qGI44CC
- 答案:Qw==
56Kx6YeR5bGe5YWD57Sg5L2N5LqO56ysSUHvvIzljIXmi6xMaeOAgU5h44CBS+OAgVJi44CBQ3PjgIFGcuOAguaJgOS7pemAiemhuUPmmK/plJnor6/nmoTvvIznrZTmoYjpgIlD44CC
本课配套习题挑战模式5/5
单选题
难度系数:
5.下列关于碱金属铷(Rb)的叙述正确的是
A: 它位于周期表的第四周期第IA族 |
B: 氢氧化铷是弱碱 |
C: 在钠、钾、铷三种单质中,铷的熔点最高 |
D: 硝酸铷是离子化合物 |
一次做对,真牛!
+5奖励规则>
- 提示1:5Zyo5YiG5p6Q6ZO355qE5ZGo5pyf5pWw5pe25LiN6KaB5b+Y6K6w4oWgQeaXj+S4rei/mOaciUjlhYPntKDjgII=
- 提示2:5YW25LuW6YCJ6aG55oyJ54Wn56Kx6YeR5bGe5YWD57Sg55qE5oCn6LSo6KeE5b6L5L6/5Y+v5Lul5YiG5p6Q5Ye65p2l44CC
- 答案:RA==
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