an element is a substance , all of ___ atoms have the same atomic number为什么选whose ? 请高手讲讲..相关知识点: 试题来源: 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...
01This question is about atomic structure.Figure 1 represents an atom of element Z.Figure 1-B A十01.1Name the parts of the atom labelled A and B.Choose answers from the box.[2 marks]electron neutron nucleus proton A nucleus B electron01.2Which particle has the lowest mass?Choose the ...
Consider the element Au (Atomic Mass = 197). What is the atomic number? What is the atomic mass of the total protons and neutrons in an atom? 1) An element with : 44 atomic number 102 atomic mass What is the element? Express your answer as an isotope. 2) An element with : 52 at...
Atomic mass number of an element is 232 and its atomic number is 90. The end product of this radiaoctive element is an isotope of lead (atomic mass 208 and at
To find the vapor density of the volatile metal chloride, we can follow these steps:Step 1: Determine the molecular formula of the metal chloride. Given that the atomic mass of the element is 27 and its valency is 3, we can ded
34 An element has an atomic number of 4.Which statement about this element is correct?A A It forms ions by losing electrons. B It has four occupied electron shells in each of its atoms. C It is an unreactive gas at room temperature and pressure. D It is found in Group IV of the ...
1Th e relativ e atomic mass o f an element is defined as D A averag e mass o f on e atom o f carbon-12mass o f on e atom o f carbon-12 B averag e mass o f on e atom o f th e element mass o f on e atom o f carbon-12 C f½c{1}{12}x averag e mass o ...
Optical element which is curved in a double having an atomic surface gradually changing(57) providing a device having a curved optically for use when focusing is focused x-rays from [Abstract] divergent radiation source. This element includes a reflective surface atoms of a plurality of curved ...
and its atomic number is 90 . The end product of this radiaoctive element is an isotope of lead (atomic mass 208 and atomic number 82 .) The number of α -and β -particles emitted are. A 6 , 3 B 6 , 4 C 5 , 5 D 4 , 6 Video SolutionStruggling...
To find the atomic mass of an element given the weight of one atom, we can use the relationship between the mass of a single atom and the number of atoms in one mole (Avogadro's number). Here’s how to solve the problem step by step:1.