Which of the following elements has the least number of protons? A. Hydrogen B. Helium C. Lithium D. Beryllium 相关知识点: 试题来源: 解析 A。解析:氢(Hydrogen)的原子序数为1,也就是质子数为1;氦(Helium)原子序数为2,质子数为2;锂(Lithium)原子序数为3,质子数为3;铍(Beryllium)原子序数为4,...
Each element is defined by the number of protons found in each of its atoms. No matter how many electrons or neutrons an atom has, the element is defined by its number of protons. In fact, it's actually possible to have an atom consisting of only a proton (ionized hydrogen). The peri...
释义 atomic number 主要翻译 atomic number, proton number n (physics: number of protons) (原子核中质子的数量)原子数Hydrogen has the lowest atomic number because it has only one proton. 随便看 什么岁什么久的成语 什么岁什么储的成语 什么岁什么后的成语 什么岁什么好的成语 什么岁什么年的成语 什...
Is the number of protons equal to the atomic number? What is the mass number of an atom with 5 protons and 7 neutrons? Does number of protons always equal the number of electrons in an atom? How to find the number of protons in an atom If an atom has an atomic number of 8, how ...
any number of expr (any quantity of) SC 任何数量 any number of expr (a large quantity of) SC 许多xǔ duō TC 許多 SC 很多xǔ duō,hěn duō atomic number, proton number n (physics: number of protons) (原子核中质子的数量) SC 原子数 yuán zǐ shù TC 原子數 Hydrogen has the lowe...
An atomic number of an element is the number of protons in all the atoms of that element. Atomic numbers are always whole numbers greater than zero, such as 1,2,3... since an atom cannot have a fractional number of protons. What is the difference between an atomic number and a mass ...
the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element 更多 英文 词典里"atomic number"的近义词 英文 叙词表中“atomic number"的另一个词是number。 number 更多 atomic numbe...
How many protons are in an isotope of sodium with a mass number of 25? What is the approximate atomic mass of an atom with 16 neutrons, 15 protons, and 15 electrons? How many protons, electrons, and neutrons are in Hydrogen-3 atom? How many protons are there in the nucleus of an ...
oxidation number, oxidation state - the degree of oxidation of an atom or ion or molecule; for simple atoms or ions the oxidation number is equal to the ionic charge; "the oxidation number of hydrogen is +1 and of oxygen is -2" cardinality - (mathematics) the number of elements in a ...
What is the mass number of molybdenum? What is the atomic mass of tennessine? What is the atomic mass of copernicium? What is the mass number for beryllium? What is the mass number of hydrogen? What is the mass number of an atom with 5 protons and 7 neutrons? What is the mass number...