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What is the main component of the atomic mass in English? A. Protons B. Electrons C. Neutrons D. Protons and neutrons 相关知识点: 试题来源: 解析 D。本题考查原子质量的主要组成部分。质子和中子的质量较大,是原子质量的主要构成部分,电子质量很小可忽略。选项 A 仅提到质子,不全面。选项 B 电子...
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the total mass of the protons, neutrons, and electrons in a single atom when it is at rest. This is not to be associated or mistaken for atomic weight. Atomic mass is measured by mass spectrometry. You can figure the molecular mass of an compound by adding the atomic mass of its atoms...
What is the difference between atomic structure and crystal structure? What makes up most of the volume of an atom? How does an ion differ from an atom? What are the masses of the subatomic particles? What is the mass number for silicon?
An element's atomic mass is equal to the sum of the individual particle masses of an atom. Atoms have three basic particles which include protons, neutrons, and electrons. The standard unit for measuring atomic mass is the Dalton (u). ...
Atomic Mass: The atomic mass is the sum of the protons and neutrons in the atom's nucleus. The atomic mass is often determined by calculating the average of the element's isotopes. The unit of atomic mass is dalton or atomic mass unit. It is also known as the element's atomic weight...
The main function of the nucleolus isto make the small parts or subunits, which make up the ribosomes, the construction workers of the cell. The nucleolus makes the subunits from ribosomal RNA and proteins. What is nucleus with diagram?
was understood that the atom had a central nucleus. In this model, the atom is a ball of positive charge -- the pudding -- in which the electrons -- the plums -- are located. The electrons rotate in defined circular paths within the positive blob that makes up the majority of the ...