2.中子数（核子数）N 来源 英语：Neutron number 中子数量 3.质量数（原子质量数）A 来源：Atomic ma...
A. The number of protons B. The number of neutrons C. The number of electrons D. The sum of protons and neutrons 相关知识点: 试题来源: 解析 A。原子序数由质子数决定。选项 A 正确,原子序数等于质子数。选项 B 中子数不能决定原子序数。选项 C 电子数在原子呈电中性时等于质子数,但不是决定原...
nucleon-nucleon colli nucleon atomic nucleon bare nucleoncharge nucleon evaporation nucleon gas nucleonic density gau nucleonic equlpment nucleon incident nucleon individual nucleon isobar nucleon isobar model nucleon nucleon colli nucleon nucleon encou nucleon nucleon scatt nucleon recoil nucleon recoiling nucl...
not at any price not atomic not attempted not avoid latitude not be on this planet not beautiful not cha not believing me not blue not brand loyalty not brave enough not buy not buying not by man dozen not calendar age not caregive twopence not client not conceptual analys not confucianism...
The mass number of argon is 40.How many protons, neutrons and electrons are there in an argon atom? ( ) 相关知识点: 试题来源: 解析 一个氩原子有 18 个质子、22 个中子和 18 个电子。 1. 原子序数: 氩的原子序数为 18,这意味着它的原子核中有 18 个质子。 2. 质量数: 氩的质量数为 40...
an element is a substance , all of ___ atoms have the same atomic number为什么选whose ? 请高手讲讲.. 答案 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...
promoters, and correlated the n-butane direct dehydrogenation (DDH) activity with the average coordination number (CN) of Pt-Pt bond in Pt NP, Pt3 cluster and Pt SA for fundamentally understanding structure (especially the sub-nano structure) effects on n-butane DDH reaction at the atomic ...
It is shown that the spatial extensions of spin density changes with atomic numbers: the higher the atomic number of the adsorbate, the less spin density distribution on the adatoms and more on matrix Sn atoms. This suggests that the magnetic moment is mainly contributed from the adatoms and...
nominal annual rate nominal atomic bomb nominal cartridge dia nominal pressure rati nominal pressure pn nominal pssure angle nominal value willmig nominalchangerent nominalisation in wri nominalp value nominalpipediameter nominalrequency nominate 30 d nominate as nominate vt nominated surveyor nommans land...
n two-step draw dies n tx normal universit n us atomic submarine n underwater connecto n upsetting force n vertical engine n vision n wave drag n winter north atlant n wireless installati n wood sole under bol n wreck inquiry n merrilliata n alata npl sunglasses nbryanti nec senior manag...