Is iron a metal, nonmetal or metalloid? Is sodium chloride an amorphous solid? Is scandium a metal, nonmetal or metalloid? Is platinum a metal, nonmetal or metalloid? Is bromine a metal, nonmetal or metalloid? Is gold a metal, nonmetal or metalloid?
Why is an enolate ion generally more reactive than a neutral enol? The hexaaquascandium(III) ion, (Sc(H_2O)_6)^3+, is colorless. Explain why this might be expected. Define the term solubility. How is it affected by temperature?
containing scandium complex after the PH value of the solution was adjusted to 1 -7; (4) a solution containing scandium and strongly acidic ion-exchange resin, or it flows containing a strong acid cation exchange resin exchange column, impurity ions are adsorbed to give pure scandium solution....
Thus while Mendeleev was able to predict the existence and the chemistry of the missing elements eka-boron, eka-aluminium, and eka-silicon (scandium, gallium, and germanium) with considerable certainty, he was much more tentative when it came to other elements. In his Faraday Lecture of 1889 ...
The iron(II) salt also acts as a Lewis acid in non-coordinating CH2Cl2 solution, to catalyze heterolytic CN bond cleavage of the aziridine and insertion of dipolarophiles. The 1,3-zwitterionic intermediate is presumably supported by interaction of the metal dication with the anion, and by ...
Photoexcitation of a Mn~(IV)-oxo complex binding scandium ions ([(Bn-TPEN)Mn~(IV)(O)]~(2+)–(Sc(OTf)_(3))_(2)) in a solvent mixture of trifluoroethanol and acetonitrile (v/v = 1:1) resulted in formation of the long-lived photoexcited state, which can hydroxylate benzene to ...
One composite extractant-enhanced polymer resin, it is for valuable metal, such as rare earth metal, directly leaching for scandium includes an extractant and a polymer resin and more specifically, does not require the acid extracting mud for being reduced into ferrous ion and/or acid extracting...
Is the scandium atom paramagnetic or diamagnetic? Explain. What is the difference between diamagnetic a paramagnetic compounds/element? Is the fluorine atom paramagnetic or diamagnetic? Explain. Is platinum in Pt(en)Cl2 diamagnetic or paramagnetic?
What is the valence electron configuration for scandium? What is the formal charge on the sulfur atom in a Lewis structure for the sulfate ion in which every atom satisfies the octet rule? What is the electron affinity of Mg^2+ ion?
What is the element that corresponds to the electron configuration 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 4 s 2 3 d 3 ? (a) cobalt (b) vanadium (c) manganese (d) iron (e) scandium Which period of the periodic table is titanium (Ti) located in?