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Synthesizing Cyclotetrazane from Hydrazine and Diazene?

Tl:DR: These sorts of compound are extremely unstable largely due to ring strain, so it is unlikely that it will be synthesized. Long Answer: The study of the chemistry of experimentally known ...
Nilay Ghosh's user avatar
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Why do compounds like SF6 and SF4 exist but SH6 and SH4 don't?

While other answers describe the reasons hypercoordination is more difficult with hydrogen than with fluorine, the former has been achieved — and it may have an impact on superconducting materials ...
Oscar Lanzi's user avatar
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6 votes

Synthesizing Cyclotetrazane from Hydrazine and Diazene?

What might formally be considered a magnesium salt, $\ce{Mg2[N4]}$, has been formed from the elements at 50 GPa pressure[1]. The salt is recovered as a metastable compound at atmospheric pressure. The ...
Oscar Lanzi's user avatar
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2 votes
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Does solubility product dictate predominant precipitate from the solution with several ionic compounds?

Not necessarily. If the salts have different stoichiometries, the solubility products are really comparing apples with olives. According to this table, calcium hydroxide $\ce{Ca(OH)2}$ has a ...
Oscar Lanzi's user avatar
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4 votes
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Why is R₃P=O common but R₂Si=O rare?

$\ce{R₂Si=O}$ are referred to as silanone and are extremely reactive. There is an explanation of this in the Wikipedia article: Silanones are extremely reactive and until 2013 were only detected by ...
Nilay Ghosh's user avatar
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1 vote

Manganese Oxidation States, Reverse Chameleon?

Probably your best approach is to use the methods reported by Wikipedia. The most commonly used method in industry involves these steps: Dissolve solid $\ce{MnO2}$ in molten potassium hydroxide plus ...
Oscar Lanzi's user avatar
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1 vote

Are there any sodium salts that are insoluble in water?

$\ce{Na3[FeF6]}$ and $\ce{Na2H2Sb2O7}$ are white precipitates when $\ce{Na+}$ is dissolved with $\ce{[FeF6]^{3-}}$ and $\ce{K2H2Sb2O7}$ respectively. Hence, these reagents are used in the qualitative ...
Thecoder001's user avatar
0 votes

Hydrogen oxidation number

The guidelines for naming compounds do not coincide with the guidelines for oxidation state, because: (1) the formal electronegativity order for compound naming does not match the actual ...
Oscar Lanzi's user avatar
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3 votes

Solubility of lead carbonate

When lead salt reacts with sodium carbonate, a white precipitate of a mixture of lead carbonate and lead hydroxide forms: $$\ce{2Pb^2+ + 2CO3^2- + H2O -> Pb(OH)2 \downarrow + PbCO3 \downarrow + CO2 ...
Nilay Ghosh's user avatar
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5 votes
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Does chromium chromate -- Cr₂(CrO₄)₃ -- exist?

You're assumption is correct, chromic chromate, $\ce{Cr2(CrO4)3}$ does exist. Some other names listed at NIH.gov are chromium(III) chromate and dichromium tris(chromate), and the diagram below is from ...
DrMoishe Pippik's user avatar
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What is the difference between bond disassociation energy and lattice energy?

Well if you want the simplest answer, it is: Lattice energy is used when talking about ionic bonds where all the molecules are neatly arranged in a 3D structure called crystal lattice. Bond enthalpy/...
ADITYA DAS's user avatar
1 vote
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What is the nature of the bonds in BaO2 (Ionic or covalent)?

$\ce{BaO2}$ or Barium Peroxide consists of $\ce{Ba^2+}$ cation and $\ce{O2^2-}$ anion (or peroxide anion) The ionic bond exists between the ions ($\ce{Ba^2+}$ and $\ce{O2^2-}$) Whereas the covalent ...
DarkKnight's user avatar
4 votes

Finding the atomic packing factor (APF) of Sodium Chloride and other FCC ionic compounds

Coming to question 1, that is, is your calculation correct? Quoting from Wikipedia, In solid sodium chloride, each ion is surrounded by six ions of the opposite charge as expected on electrostatic ...
Harikrishnan M's user avatar
0 votes
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Ionic Character of Metallic (Alkali Metals) Hydrides , and Reactivity

First and foremost, hydrides of alkali metals are ionic in nature. So, you cannot use Fajan's rule to determine ionic character as it is only used for covalent compounds. For ionic compounds we use ...
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1 vote

Reaction between copper rod and carbon rod in hydrochloric acid

If no air and no oxygen gas is involved in this system, there is no reaction : copper should not react. If oxygen $\ce{O2}$ is present (for example in solution), the reaction proposed by Poutnik ...
Maurice's user avatar
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Why does Cs2SO4 have more lattice energy that Na2SO4?

Generally speaking, large cations and large anions ($\ce{Cs2SO4}$) form more stable lattices as compared to small cations and large anions($\ce{Na2SO4}$). One reason could be that the ionic character ...
frivolous_math_lover's user avatar
1 vote

Why can't group 2B metals (Zn, Cd, Hg) form complexes with ligands such as CO, nitrosyl (NO), and olefins but do from complexes with NH3, CN- etc?

In addition to Oscar's zinc complex, I want to point out the very first thermally stable cadmium carbonyl complex, $\ce{[Cd(CO)3(C6H3Cl)]4·2H2O}$. It has been synthesized with an overall yield of 35%. ...
Nilay Ghosh's user avatar
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1 vote

Reaction between copper rod and carbon rod in hydrochloric acid

The carbon as an inert electrode can serve as the conductor for an oxygen electrode due dissolved aerial oxygen. But the reaction $$\ce{2 Cu(s) + 4 H+(aq) + O2(aq) -> 2 Cu^2+(aq) + 2 H2O(l)}$$ ...
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7 votes

Why can't group 2B metals (Zn, Cd, Hg) form complexes with ligands such as CO, nitrosyl (NO), and olefins but do from complexes with NH3, CN- etc?

Zinc actually has been incorporated into a room-temperature carbonyl complex embeeded into a zeolite matrix [1]. Ordinarily, G12 metal centers have their $d$ orbitals too tightly bound to serve as pi ...
Oscar Lanzi's user avatar
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0 votes
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What effect does the weak base have here?

The key is the fact that strongly alkalic pH due strong base presence practically suppresses the salt hydrolysis. Unless the acid is very weak. Imagine there is $\pu{1 L}$ of the solution, containing $...
Poutnik's user avatar
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Is there a selective wet etch of Bi2O3 Bismuth Oxide?

In order to achieve what you're looking for you can use buffered hydrochloric acid solution. This solution can be adjusted to increase or minimize the etching rate of bismuth while selectively ...
Anjankumar's user avatar
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How to make a thin layer of crystalline barium titanate on copper substrate?

I don't think your first mentioned method is possible due to a few reasons : The hydrofluoric acid we're talking about is highly reactive and so, corrosive. It can etch and in fact, dissolve several ...
Anjankumar's user avatar
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Silver Tarnish and Reactivity Series

We do indeed have an exothermic reaction between hydrogen sulfide and silver, which goes against the usual EMF series. The EMF series applies specifically to species in water solution, so we should ...
Oscar Lanzi's user avatar
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