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定...
The number of protons in an atom of any given element is always the same. Physicists call this the atomic number. So, in the above example of lead, its atomic number is 82 and that does not change; if it did, it would be a different element (thallium, atomic number 81, or bismuth...
百度试题 结果1 题目The total number of protons and neutrons in an atom is calledA.the atomic numberB.the proton numberC.the mass numberD.the neutron number 相关知识点: 试题来源: 解析 C 反馈 收藏
The number of protons in an atom equals the number of ___. Atoms: Atoms are comprised of three basic components. In the nucleus, there are protons (positive charge) and neutrons (no charge). These are where the vast majority of the weight is and will determine what type of atom this ...
The number of protons in an atom is referred to as the: a. mass number b. atomic mass c. atomic number d. charge Proton: Proton is a subatomic particle that lives inside the nucleus of an atom. It is positively charged and has a charge equal...
1. The Elements and The Periodic Table(元素和周期表) The number of protons in the nucleus of an atom is referred to as the atomic number, or proton number, Z. The numbers of electrons in an electrically neutral atom is also equal to the atomic number, Z. The total mass of an atom ...
百度试题 结果1 题目The nucleus of an atom is _ of swiftly moving protons(质子)and neutrons(中子)that are bound together by very strong forces. A. consisted B. contained C. composed D. compressed相关知识点: 试题来源: 解析 C 反馈 收藏 ...
The atomic number of an element is always equal to ANumber of neutrons in nucleus BHalf of the atomic weight CElectrical charge of the nucleus DWeight of the nucleusSubmit The total number of protons and neutrons present in the atom of an element is known as its mass number. It is repre...
If we label the number of protons in a nucleus byZand the number of neutrons byNwe say that the total number of nucleonsAis: A=Z+N The binding energy per nucleon versus mass number A. This figure shows that iron is the most stable nucleus and that helium is much more stable than oth...
chapter1-TheFoundationsofChemistry基础化学 2 ChemistryiseverywhereTent→plasticSteelcookinggrate→alloyofironandcarbonTrees→Photochemicalreaction →CO2+H2O→carbohydrateOurbodies→inorganicandbioorganiccompounds…...chapter1-TheFoundationsofChemistry基础化学 3 Chemistry •thesciencethatdescribesmatter—•properties,...