题目
题型:不详难度:来源:
A.131I、132I、134Cs、137Cs是四种不同的核素 |
B.食用碘盐不能防辐射 |
C.碘片的主要成分是I2 |
D.核能仍然是重要能源之一 |
答案
核心考点
试题【3月11日的日本大地震使福岛第一核电站受损,泄漏放射性物质131I、132I、和134Cs、137Cs等导致核污染.服用一定剂量的碘片可防放射性碘的伤害.下列说】;主要考察你对元素周期律等知识点的理解。[详细]
举一反三
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165504-80317.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165504-71714.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165504-87292.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165504-60390.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165504-93566.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165505-32235.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165505-95841.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165505-74317.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165505-85112.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165506-63591.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165506-91814.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165506-36560.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165506-55200.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165507-61419.png)
其中:(1)表示核素的符号共有______种;
(2)互为同位素的是______(填序号,以下相同);
(3)中子数相等,但质子数不相等的是______;(4)有机物中是同一种物质的是______;
(5)写出(12)其他同分异构体的结构简式
______.
A.14C和14N互为同位素 |
B.14C和C60是同素异形体 |
C.14CO2的摩尔质量为46 |
D.地球上活着的生物体内,由于新陈代射作用也存在14C |
![](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165452-91680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165452-91680.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165452-91680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165452-58115.png)
②原子核中含有1个中子,核外有2个电子;
③
![](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165452-91680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165452-58115.png)
![魔方格](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165452-26814.png)
④与
![](http://img.shitiku.com.cn/uploads/allimg/20200107/20200107165452-58115.png)