What is the atomic number?Atoms:Atoms are the basic unit of matter. Each atom has a dense nucleus composed of neutrons and protons. It also has a less dense outer electron cloud. Neutral atoms contain the same number of protons and electrons, which are positively and negatively charged, ...
What is the atomic number of niobium? What is the atomic number for francium? What is the atomic number of curium? What is the atomic number of lanthanum? How many valence electrons does scandium have? What is the atomic number of oxygen-16?
The chemical element with atomic number 8 is oxygen. What is the abbreviation for oxygen? A. Oy B. O C. Od D. Og 相关知识点: 试题来源: 解析 B。氧元素的英文是 oxygen,其缩写形式是 O。选项 A“Oy”不是氧元素的正确缩写;选项 C“Od”一般不是任何化学元素的缩写;选项 D“Og”一般不是...
Learn what atomic number, mass number and atomic mass represent. See the concept mass number vs atomic mass. Related to this QuestionThe atomic number of oxygen is 8. What is the mass number of a oxygen atom with 7 neutrons? The atomic number of oxygen is 8. What is the mass number...
The atomic number of oxygen is 8. What is the mass number of a oxygen atom with 7 neutrons? Express your answer as an integer. The atomic and mass numbers for four different atoms are given below. Which two are isotopes? Atom Atomic Number Mass Number A 10 25 B 10 24 C 11...
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 in gThe sample of hydrogen has a mass of 1.01 amu?Ho
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 neutrons. It is expressed in AMU ...
The idea of the atom was first devised byDemocritusin 530 B.C. In 1808, an English school teacher and scientist namedJohn Daltonproposed the modern atomic theory. Modernatomic theorysimply states the following: Every element is made of atoms- piles of paper clips. ...
hydrogenatoms have one andoxygenatoms have eight. The number of protons in an atom is referred to as the atomic number of that element. The number of protons also determines the chemical behavior of the element. Elements are arranged in thePeriodic Table of the Elementsin order of increasing ...
isotopes are radioactive-meaning they "radiate" energy as they decay to a more stable form, perhaps another element half-life: time required for half of the atoms of an element to decay into stable form. Another example is oxygen, with atomic number of 8 can have 8, 9, or 10 neutrons...