极性-2-Polar Covalent Bonds and Nonpolar Covalent bonds极性共价键和非极性共价键 1159 -- 12:16 App 分子间作用力-1-Dipole Dipole Forces of Attraction - 偶极偶极 781 -- 11:42 App 原子理论-3-Law of Multiple Proportions 倍比定律及练习 57 -- 6:26 App 化学计量学-8- Percent Error 误差的计...
# of Protons = 2 (atomic #) # of Protons = 2 (atomic #) # of Neutrons = 2 (Mass# # of Neutrons = 2 (Mass#-- Atomic# Atomic# 4.00 4.00--2.00= 2.00) 2.00= 2.00) # of electrons = 2 (atomic #) # of electrons = 2 (atomic #) Diagram on Finding Protons, Diagram on Find...
On the day that I die I'll just give a smile and fly into the blue Cause we're all just Protons Neutrons Electrons That rest on a Sunday Work on a Monday and someday soon We'll be singing the old tunes Zip-a-dee-doo-dah Zip-a-dee-doo ...
Which combination of protons, neutrons, and electrons is correct for the isotope copper-63, ? 选项: A. 29 p+ , 29 n°, 63 e− B. 34 p+ , 29 n°, 34 e− C. 34 p+ , 34 n°, 29 e− D. 29 p+ , 34 n°, 29 e− E. 63 p+ , 29 n°, 63 e− 相关知识点...
百度试题 题目Atoms are made from even smaller particles. They are Protons, Neutrons and Electrons. A.正确B.错误相关知识点: 试题来源: 解析 A 反馈 收藏
英文词汇:molecules,nucleus,protons,neutrons,electrons一定要加S么,为什么.还是一般情况?atom呢? 答案 就是单数复数啦...比如说proton就是一个质子,protons就是多个质子……氢就是one proton……在这几个词中,nucleus比较特殊.nucleus是单数,nuclei是复数【参见半径单数=radius复数=radii】相关推荐 1英文词汇:molecule...
2 (a) Th e tabl e below gives th e number of protons, neutrons and electrons in atoms or ions.Complet e th e table. Th e first lin e is given as an example.You will need to us e th e Periodic Table.particle number of number of number of symbol or protons electrons neutrons for...
2 (a)The table below gives the number of protons, neutrons and electrons in atoms or ions.Complete the table. The first line is given as an example.You will need to use the Periodic Table.number of particle number of number of symbol or protons ele ctrons neutrons formula A445Be B19182...
An atom is made up of ___. A. protons, neutrons and electrons B. protons and neutrons only C. neutrons and electrons only D. protons and E. lectrons only 相关知识点: 试题来源: 解析 A。原子由质子、中子和电子组成。选项 B、C、D 都不完整。反馈...
Protons carry a positive electrical change, while electrons are negatively charged, and neutrons are neutral. A neutral atom has the same number of protons and electrons (charges cancel each other out). An ion has an unequal number of protons and electrons. If the charge is positive, there ...