The atomic weight of an atom, or the molecular weight of a molecule, is its mass relative to that ofa___ atom. This is essentially equal to the number of protons plus neutrons that the atom or molecule contains. A oxygen B hydrogen C helium D carbon 相关知识点: 试题来源: 解析 B ...
The atomic number is the number of protons in an atom and the mass number is the number of protons plus the number of neutrons. The atomic number is... Learn more about this topic: Atomic & Mass Number | Overview & Difference from ...
The atomic mass is the mass of an atom. Although the SI unit of mass is the kilogram, the atomic mass is often expressed in the non SI-unit dalton, where one dalton is defined 1/12 of the mass of a single carbon-12 atom, at rest. The protons an...
The sum of an atom's protons and neutrons is its What nuclide has 27 protons and 33 neutrons? The atomic mass is equal to: A. the number of neutrons. B. the number of protons plus the number of electrons. C. the number of protons plus the number of neutrons. D. the number of el...
The Atomic Number of an atom: ... is the number of protons in the atom. It is sometimes represented by the symbol 'Z'. The Atomic Number (Z) is sometimes called the 'Proton Number'. The Mass Number of an atom: ... is the total number of protons and neutrons in the atom. It ...
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...
The atomic mass of the element is determined by the combined masses of neutrons and protons. True or false? Explain. Answer and Explanation: The atomic mass or atomic weight of an element (or put it in simple term, mass of an atom) is found ...
Protons have apositive(+1)charge, which balances the negative (-1) charge of theelectronsthat surround the nuclei of atoms. Protons have arelative massof 1, which is the same as the relative mass of neutrons. Thenumber of protons in an atomis called the 'Atomic Number' of that atom and...
The nucleus is made of one or more protons and a number of neutrons. Post navigation ←Older posts Newer posts→ Feed-forward regulation among mobile senescence and also immunosuppression encourages getting older Posted onDecember 5, 2024 Reply...
ICSEC - Grade 09 - CHEMISTRY - Atomic Structure And Chemical Bonding - Q23