4.下列关于元素周期表的说法正确的是 A.元素周期表目前共有8个

4.下列关于元素周期表的说法正确的是

A.元素周期表目前共有8个周期   

B.元素周期表中第IA族全部是金属元素

C.元素周期表中共有十八个族,其中有主族、副族、0族和VIII族

D.元素周期表中第一、二、三周期为短周期

答案

D

相关题目

下列溶液中:        ①石灰水     ②H2S溶液    ③KMnO4溶
下列溶液中:        ①石灰水     ②H2S溶液    ③KMnO4溶液    ④溴水 ⑤酸化的Ba(NO3)2溶液      ⑥品红溶液, 不能区别SO2和CO2气体的是       
我国的全国人大代表,来自各地区、各民族、各方面,工人
我国的全国人大代表,来自各地区、各民族、各方面,工人、农民、知识分子、解放军和妇女、归国华侨等都有适当的比例,人口再少的民族也至少有
 You’d better have the second-hand car ______ before you sell it. A. repaire
 You’d better have the second-hand car ______ before you sell it. A. repaired                            B. repair                C. in repair     
     The volunteers are doing _____ difficult and important work; they shar
     The volunteers are doing _____ difficult and important work; they share ____ common goal to help people in need.       A. a; a                       B. a; the  
对于地球的自转与公转描述正确的是                
对于地球的自转与公转描述正确的是                                   (     ) A.方向相同 B.周期相同  C.自转产生的现象
- Helo,this is Wendy. Can I speak to Jessica?- Yes,_____.A.Jessica is me
- Helo,this is Wendy. Can I speak to Jessica?- Yes,_____.A.Jessica is meB.Jessica,pleaseC.my name is JessicaD.this is Jessica speaking
函数的自变量x的取值范围是__________________.
函数的自变量x的取值范围是__________________.
 ---How about        party?  ---Cool! It was really      great fu
 ---How about        party?  ---Cool! It was really      great fun! Pity you weren’t there. A the; /                B the; a              C  a; the   

最新题目