元素周期表
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
随着原子序数的递增,下列说法正确的是
最外层电子数逐渐增多
原子半径逐渐减小
元素的电负性逐渐增大
元素的第一电离能呈周期性变化
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
与主族元素在元素周期表中所处的位置有关的是__________。
相对原子质量
核内中子数
次外层电子数
电子层数和最外层电子数
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列说法错误的是_____。
元素周期表中有8个主族、8个副族
稀有气体元素原子的最外层电子数均为8
氢是原子半径最小的元素
氧元素位于第2周期VIA族
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列有关微粒性质的排列顺序,错误的是__________。
原子半径:Na > S > O
电负性: P < S < O
离子半径:Al3+ > Mg2+ > Na+
第一电离能:O < F < Ne
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列各组元素,按照原子半径依次减小、第一电离能依次增大的顺序排列的是_______。
Ca, Mg, Be
Na, Mg, Al
C, N, O
P, S, F
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
具有下列电子构型的元素中,第一电离能最小的是________。
ns2 np3
ns2 np4
ns2 np5
ns2 np6
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列叙述正确的是____________。
除VIIIA族元素外,短周期元素的最高化合价在数值上都等于钙元素所属的族序数
除短周期外,其它周期均有18种元素
副族元素中没有非金属元素
碱金属元素是指IA族的所有元素
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