A. Sodium chloride B. Magnesium oxide C. Water D. Potassium nitrate 相关知识点: 试题来源: 解析 C。解析:在化学中,水(water)是共价化合物(covalent compound)。共价化合物是由原子间通过共用电子对形成的化合物。氯化钠(sodium chloride)、氧化镁(magnesium oxide)和硝酸钾(potassium nitrate)都是离子化合物...
Normally, if the difference in electronegativity is larger than 1.7, then it is more ionic than covalent; equals 1.7, 50% covalent 50% ionic; smaller than 1.7, more covalent than ionic. Thus, you can also use this as a guideline to judge whether a binary compound (like NaCl) is ionic ...
The disulfide compound which is displayed with formula C by covalent binding (the inside n of type C is integer 1 - 20 on the metalPROBLEM TO BE SOLVED: To provide a photoenergy transferable element obtained by forming a self- organized monomolecular film composed of a mixture of an energy ...
Convert the following from name to formula or formula to name and state whether it is an ionic or covalent compound. (a) Lead (IV) carbonate (b) P 2 O 5 (c) Iodine pentaflouride (d) A u 2 O 3 What is the name of the binary ionic compound with the formula SrSe?
The chemical formula for copper sulfate is CuSO4.x H2O, indicating that it is a covalent compound comprising copper, sulfur, and oxygen. Its crystalline structure and pleasant smell are evident from its chemical composition. Figure (1) shows the molecular structure of copper sulfate. ...
Is this compound ionic or covalent? Lead and Oxygen: Lead is a metal that belongs to the carbon family of the periodic table. The chemical symbol for lead is Pb. And oxygen is a non-metal that belongs to the oxygen family of the periodic table. The chemical symbol for o...
The scientific study of matter's characteristics and behaviour is known as chemistry.andare different from the normal vocabulary. It is a branch of natural science that examines the building blocks of matter, including the atoms, molecules, and ions that make up compounds and their composition, ...
what test is commonly used to determine if a compound is ionic or covalent and what would be its results?什么实验通常用于决定一个化合物是离子键或共价键且它的结果是什么?当一种化合物可以在水溶液中发生电离时,也就是有离子存在时这种化合物就含离子键或是这种化合物由离子构成,这就是离子化合物,它...
(PSS, 130 mM NaCl, 4.7 mM KCl, 1.18 mM KH2PO4, 1.17 mM MgSO4, 14.9 mM NaHCO3, 5.5 mM dextrose, 0.026 mM EDTA, 1.6 mM CaCl2, pH 7.4 at 37 °C). To identify the optimal pre-stretch value for experiments, a normalization factor (IC1/IC100) was ...
(aa 54-213) was co-transformed with a pCDF Duet plasmid containing EloB (aa 1-104) and EloC (aa 1-112) into E.coli BL21 (DE3) cells for protein expression. After expression by IPTG induction, cells were collected and resuspended in 50 mM Tris pH 7.5, 500 mM NaCl, 5% glycerol...