百度试题 结果1 题目The atomic number of an element represents the number of ___. A. protons B. neutrons C. electrons D. protons and neutrons 相关知识点: 试题来源: 解析 A。元素的原子序数代表质子数(protons)。反馈 收藏
The atomic number of an element represents the number of protons in its nucleus. Therefore, an element with an atomic number of 53 is the element... See full answer below.Become a member and unlock all Study Answers Start today. Try it ...
The meaning of ATOMIC NUMBER is an experimentally determined number characteristic of a chemical element that represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines t
- The actual mass of one carbon atom is 12 amu. Using the relationship:12 g/mol=12 amu×6.022×1023 atoms/molThis confirms that the atomic mass is indeed the mass of Avogadro's number of atoms. ConclusionIn summary, the atomic mass of an element represents the mass of a mole of its...
The atomic number of an atom is always equal to the number of protons that are found in that atom. This number can typically be found on a periodic table above the symbol in an element's box. The number of protons in an atom is similar to the DNA of a human; it is responsible ...
Atomic Number: The atomic number of an element defines it and is equal to the number of protons in the nucleus. Protons: Protons are positively charged subatomic particles that make up the nucleus. Neutrons: Neutrons are neutrally charged subatomic particles that along with protons, make up the...
atomic number如何读 英:[əˈtɔmik ˈnʌmbə] 美:[əˈtɑmɪk ˈnʌmbɚ] atomic number是什么意思 n. 原子序数(指元素在周期表中按次序排列的序号); atomic number英英释义 noun an experimentally determined number characteristic of a chemical element that represents the number...
Atoms of an element are all the same in terms of shape and size and atoms of different elements differ in size and shape. Elements are characterised by mass of their atoms so all the atoms of an element have identical weight. Different elements have atoms of different atomic weight. Atoms ...
The English chemist Nevil V.Sidgwick made the observation, since known as theEAN rule, that in a number of metal complexes the metal atom tends to surround itself with sufficientligandsthat the resulting effective atomic number is numerically equal to the atomic number of thenoble-gaselement found...
After today, you will be able to… Find the atomic mass, atomic number, and symbols of elements off of the Periodic Table Calculate the number of neutrons in a particular atom Explain what an isotope is Atomic Number The number of protons in the element. Always a whole number Example: Oxy...