Atomic radius is the radius of an atom. It measures the size of an atom. If the element is a metal, then the atomic radius refers to the metallic radius, and if the element is a non-metal, then it refers to the covalent radius. Metallic radius is calculated as half the internuclear...
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The Halogens (Group 7) Fluorine, Chlorine, Bromine, Iodine, Astatine. Have 7 valence electrons (very reactive), they need 1 more to have a full valence! The Noble Gases (Group 8) Very stable and “unreactive” (inert). All have 8 valence e- except for Helium. Why is Helium still c...
Describe the trends of ionic radius and provide an explanation for your answer. What are the physical and chemical properties of sodium chloride? Discuss the effect of the ionic environment on the rate of the reaction. What does this imply about the ionic...
Nevertheless, the atomic resolution structure of the channel showed the ϕ-clamp region being as narrow as 6 Å [5]. The authors however suggested that considering that the channel is able to translocate the enzymatic components with the side chains of various diameters, it is possible that ...
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co-impregnated Pd-Cu bimetal on amorphous SiO2 and found that when the atomic ratio of Pd/(Pd + Cu) was between 0.25 and 0.34, methanol formation rates significantly surpassed that of single-metal catalysts (Figure 7). This heightened activity was attributed to the simultaneous presence of CuP...
In the process, it sucks in millions of molecules until the volume is filled. This saturation level is determined by short-range forces where the molecules are tightly packed (intermolecular distance > 3.1 Å, which is greater than the molecular radius > 1 Å), resulting in an increase ...
Upon assuming for simplicity that the cross-sectional area A of a growing supercritical nucleus is a circle of radius R, the rate of growth of A is given by the time derivative of πR2. This rate can be reasonably regarded as proportional to the frequency of the successful impacts of the...
The hydrodynamic radius of K+ ion is ≈0.315 nm or even greater, depending on the method used in the size determination [103], so it would require a pore with a diameter of at least ≈0.63 nm to allow K+ diffusion through it. From these data the doubt arises of whether the size of...