A. the number of protons in an atom B. the number of neutrons in an atom C. the number of electrons in an atom D. the total number of particles in an atom 相关知识点: 试题来源: 解析 A。元素的原子序数告诉我们一个原子中的质子数。原子序数等于质子数,选项 B 中子数不能由原子序数确...
The atomic number of an atom is:A.the number of electronsB.the number of neutronsC.the number of protonsD.the number of protons plus the number of neutrons的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工
1 The relative atomic mass of an element is defined as DA average mass of one atom of carbon-12mass of one atom of carbon-12B average mass of one atom of the element mass of one atom of carbon-12C Tx average mass of one atom of carbon-12average mass of one atom of the element Da...
The atomic number of an atom is equal to the number of protons found in the atom's nucleus. The mass number of an atom is the total number of protons and neutrons in the nucleus of the atom. Thus, the atomic number is also a contributing factor in the mass...
alwaysmoving,andcapableofjoiningtogether.3.Notwidelyaccepted–Couldnotprovetheories.Theatom Atom–Thesmallestparticleofanelementthathasthepropertiesofthatelement.Basicbuildingblocksofmatter Dalton’sModel JohnDalton–Englishchemist BasicIdeasofDalton’sAtomicTheory:A.Allelementsarecomposedofatoms–Atoms are...
24.The atomic number of carbon is six.How many electrons(电子)doesone atom of carbon have?A.Two.B.Four.C.Six.D.Twelve.24.The atomic number of carbon is six. How many electrons(电子)does one atom of carbon have? A.Two. B. Four. C.Six. D.Twelve. 相关知识点: 试题来源: 解析...
The atomic number of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the ...
百度试题 结果1 题目6 The table shows the atomic structure of four atoms.Which atom is not a metal?A electrons neutrons protons A182218B192019C192119D202020 相关知识点: 试题来源: 解析 A 反馈 收藏
Atomic mass is the mass of an atom inA.ISB.KgC.moleD.amu的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键将文档转化为在线题库手机刷题,以提高学习效率,是学习的生产力工具
Krypton = Kr Atomic Number Top Number indicates Atomic Number Atomic Number = Number of Protons Hydrogen: Atomic Number 1 = 1 proton Magnesium: Atomic Number 12 = 12 protons Lead: Atomic Number 82 = 82 Protons IF YOU CHANGE THE NUMBER OF PROTONS OF AN ATOM, YOU CHANGE ITS IDENTITY!!!