百度试题 结果1 题目 Isotopes are atoms of an element that contain the same number of protons but different numbers of neutrons. 相关知识点: 试题来源: 解析 正确 反馈 收藏
Dalton was incorrect about atoms being indivisible and in stating that all atoms of an element are identical. 道尔顿认为原子是不可分割的,并且每种元素的原子是相同的,这是不对的。 All atoms of an element have the same number of protons and electrons, but the number of neutrons might differ. ...
We are asked how to calculate the number of atoms of an element if you are given the mass of the sample. The procedure is as follows: 1. Convert...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a questio...
if 3.01x10的23次方 atoms of an elenment weigh 8g,what is the atomic weight of the element.相关知识点: 试题来源: 解析 An atomic weight (relative atomic mass) of an element from a specified source is the ratio of the average mass per atom of the element to 1/12 of the mass of an ...
解答一 举报 An atomic weight (relative atomic mass) of an element from a specified source is the ratio of the average mass per atom of the element to 1/12 of the mass of an atom of 12C.and NA=6.02*10^23therefore ... 解析看不懂?免费查看同类题视频解析查看解答 ...
Isotopesareatomsofanelementthatdifferbythenumberofneutronsinthenucleus.Isotopesofanelementarechemicallythesame,sincetheelectronsandprotons,nottheneutrons,determinetheatom’schemicalproperties.Stabilityofnucleusdependsonratioofprotonstoneutrons Someisotopeunstableandwillloseneutronsovertime-turningintoanother...
an element is a substance ,all of ___ atoms have the same atomic number为什么选whose ?. 答案 首先句子后面是作定语的,由主句可以知道,修饰的是主语element.因为atoms是原子的意思,对于元素来说,逻辑关系自然是“元素里的原子”,所以element和atoms具有从属关系,用whose(注意啦!在定语从句表示从属关系的...
a flux of atoms of an element, for example an element v, by irradiating a target (17) composed of a compound of the element, for example a iii-v compound.using a pulsed laser (21) whose energy density per pulse is at least equal to the threshold of the element, and atomic emission...
The meaning of ATOM is the smallest particle of an element that can exist either alone or in combination. How to use atom in a sentence. Did you know?
composed of particles comprising(i) atoms of an element of groups 3A, 4A, 3B or 4B of the periodic table of the elements, and oxygen atoms, particles being characterized by lithium atoms attached to atoms of (i) via an oxygen bridge wherein the pyrogenic oxide is substantially free of ...