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...
When an atom or molecule absorbs an X-ray photon, an electron can be ejected. The kinetic energy (KE) of the electron depends upon the photon energy (hν) and the binding energy (BE) of the electron (i.e., the energy required to remove the electron from the surface). By measuring ...
The atomic weight of an atom, or the molecular weight of a molecule, is its mass relative to that ofa___ atom. This is essentially equal to the number of protons plus neutrons that the atom or molecule contains. A oxygen B hydrogen C helium D carbon 相关知识点: 试题来源: 解析 B ...
An atom or molecule [主语]holding onto excess energy[定语] has been stimulated[谓语] to emit it as light.[状语] 4. 句子翻译 主句 Stimulated emission is different. 受激发射是不同的。 分句-1 It occurs. 它产生。 分句-2 An atom or molecule holding onto excess energy has been ...
百度试题 结果1 题目The water molecule is made of two hydrogen atoms and one o___ atom.相关知识点: 试题来源: 解析 oxygen 反馈 收藏
百度试题 结果1 题目The water molecule is made up of two___ (氢)atoms and one___ (氧)atom.相关知识点: 试题来源: 解析 marched 反馈 收藏
aNanotechnology is molecular manufacturing or, more simply, building things one atom or molecule at a time with programmed nanoscopic robot arms. Nanotechnology,更加简单地,是分子制造业或大厦事一个原子或分子每次用被编程的nanoscopic机器人胳膊。[translate]...
I know that the answer depends on whether your reference uses 1.7 or 2 as an electronegativity difference, but I'm still a little confused beyond that. If the iron atom in Fe2O3has a +3 charge, which means it's an ion. So therefore you'd think the molecule is ionic. But apparently...
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(23-24高三上·河北沧州·期中)A methane molecule is (compose) of one carbon atom attached to four hydrogens.相关知识点: 试题来源: 解析 [答案]composed [详解]考查动词语态。句意:甲烷分子是由一个碳原子和四个氢原子组成的。句中be composed of为固定短语,意为“由……组成”,设空处应用过去分词,...