5 The diagram shows an atom of an element.A ee key e= electron ee= nucleus containing eleven particles eHow many protons and neutrons are in the nucleus of the atom and in which group and period of the Periodic Table is the element found?number of number of group period protons neutrons...
· Key DefinitionsRelative Atomic Mass: The average mass of an atom of an element when compared to 1/12th of the mass of an atom of carbon-12.Relative Molecular Mass: The average mass of a molecule when compared to 1/12th of the mass of an atom of carbon-12.#每天学习一点点 #alevel...
1 (a) The diagram below shows the atomic structure of an atom of an unknown element D.nucleus electron shells(i) Complete the table below.particle relative charge relative mass-11/1840 or negligible O01G+11[4](ii) Element D has another isotope. Both of them have the same chemical proper...
The antonym of “atom” is ___. A. molecule B. particle C. compound D. element 相关知识点: 试题来源: 解析 C。“atom”意为“原子”,“compound”意为“化合物”,与“atom”相对。“molecule”分子;“particle”粒子;“element”元素,都不是“atom”的反义词。反馈...
Describe the structure of an atom.An atom consists of a nucleus, which contains protons and neutrons, surrounded by electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. The number of protons determines
An atom is a basic structural unit of matter, the smallest particle of an element ___ into chemical combination. A. that can enter B. can it enter C. when entering it can D. that E. nters can 相关知识点: 试题来源: 解析 A 答案:A分析:that引导定语从句,element为先行词。the smallest...
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结果1 题目 An atom is a basic structural unit of matter, the smallest particle of an element __ into chemical combination. A. that can enter B. can it ente C. when entering it can D. that enters can 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
百度试题 结果1 题目40 Which particle diagram represents a mixture?(3)Key= an atom of an element O = an atom of a different element CQ○○(1)(2)(3)(4) 相关知识点: 试题来源: 解析 (3) 反馈 收藏