are all gases whose molecules have two atoms each. The chemical symbol or sign of an element stands for one atom of the element. The formula of the element, however, stands for one molecule of the element. Most elements are solid at room temperature. Some of these elements are made up ...
解析 首先句子后面是作定语的,由主句可以知道,修饰的是主语element.因为atoms是原子的意思,对于元素来说,逻辑关系自然是“元素里的原子”,所以element和atoms具有从属关系,用whose(注意啦!在定语从句表示从属关系的时候,关系词whose不仅仅适用于人,也可以适用于物)...
The simplest unit of an element is known as the atom while the simplest unit of a compound can be a molecule or formula unit. Answer and Explanation: The number of protons is the same for all atoms of an element. For neutral atoms, the number of...
all atoms of this element contain 38 protons. this element contains 227 protons and neutrons.elements that are gases at room temperature are likely to be classified asmetalsnonmetalsmetalloidunreactivethis is a noble gas found in period 2.which property of aluminum makes it a suitable metal for...
Chemistry The structure of the atom. The Atomic Theory: All matter is made of atoms, which are particles too small to be seen. Each element has its own kind of atom. The evolution of the atomic Theory: 1.Dalton 2.Rutherford’s gold foil experiment 3.Bohr models 4.Quantum Mechanics All...
The 226 neutrons in radium (镭)-226 make this atom glow in the dark.Because they are made of smaller parts,atoms can be broken up into pieces. Once that happens, though, the pieces are no longer a part of one chemical element. Break up a carbon atom, and you no longer have carbon...
An element is a substance all of _ atoms have the same atomic number.A.thatB.whoseC.w
Let R be an integral domain. A nonzero, nonunit element r of R is called an atom (or irreducible) if r=st implies that s or t is a unit. R is said to be an atomic domain if every nonzero element is a product of atoms. Atomic domains with a finite number of atoms are called...
Dalton’s Atomic Theory (1766) Evidence for atoms Measured the masses of elements Compounds have fixed composition All matter is made up of individual particles called atoms, which cannot be divided 1All elements are composed of atoms 2All atoms of the same element have the same mass, and ato...
An element is a substance, all of ___ atoms have the same atomic numbers.A.thatB.whoseC.whatD.which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