The mass number of argon is 40.How many protons, neutrons and electrons are there in an argon atom? ( ) 相关知识点: 试题来源: 解析 一个氩原子有 18 个质子、22 个中子和 18 个电子。 1. 原子序数: 氩的原子序数为 18,这意味着它的原子核中有 18 个质子。 2. 质量数: 氩的质量数为 40...
Number of neutrons in the nucleus of the Sodium ion = 12 The atomic mass of Sodium $=11+12=23$ Hence, 1 mole of Sodium weighs 23 grams.We know,Since the atomic mass of Sodium is 23, we can also write it as 23 g/mol.Therefore, we conclude that...
百度试题 题目The average atomic mass is the weighted average of all of the naturally occurring each element.A.正确B.错误 相关知识点: 试题来源: 解析 B 反馈 收藏
Mass Number It is the sum of neutrons and protons of an atom present in nucleus. Mass Number for two different atoms can be same. The Atomic Mass of an atom is approximately equal to its Mass Number as mass of a neutron as well of a proton is one unit on atomic mass scale.Email...
1The atomic mass of copper is 63.55 amu.There are onlytwo isotopes of copper,63Cu with a mass of 62.93 amu and65Cu with a mass of 64.93 amu.What is the percentageabundance of each of these two isotopes? 2【题目】T he atomic mass of copper is 63.55 amu.T here are onlytwo isotopes...
Atomic Mass Atoms are so small, it is difficult to discuss how much they weigh in grams. Use atomic mass units. an atomic mass unit (amu) is o
The sample of hydrogen has a mass of 1.01g,how many hydrogenatoms make up 1.01g? 3英语翻译What is the mass of one carbon atom in atomic mass unit(amu)What is the mass of one carbon atom in grams(g)What is the mass of one oxygen atom in amu?What is the mass of one oxygen atom...
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Atomic mass and atomic mass unit Each element in theperiodic tableconsists of atoms, and each atom has a unique atomic mass and unique atomic number. The atomic number refers to the number of protons in the atom's nucleus, while atomic mass reflects the sum of the number of protons and ...
An atom has an atomic number of 12 and a mass number of 25. how many neutrons does the atom have? How can you find atomic number from mass number? Which of among the atomic number, mass number and isotopes distinguishes one element from one another? Explain your answer. ...