What is UUO7 and what are its properties? 5

Dude, you're mistaken, it's not uuo7, it's uuo.

You must be reading this passage "The noble gas elements refer to helium, neon, argon, krypton, xenon, radon and the 7 elements of uuo, which were discovered not long ago." It is said that there are 7 elements including UUO! instead of uuo7 element.

Ununoctium (UUO), EKA Radon, or element 118, is a postactinide element with atomic number 118, and its chemical symbol UUO is the provisional system designation for IUPAC. On the periodic table, it is located in the p-block and is also the last element in period 7. UUO is currently synthesized and belongs to 18 groups.

Its atomic number and atomic weight are the highest of all discovered elements. UUO is radioactive and its atoms are very unstable. Since 2002, only 3 (possibly 4) atoms of the UUO isotope have been detected.

This limited experimental studies of its properties and possible compounds, but theoretical calculations were made, some of which were unexpected. For example, UUO is a member of group 18, but it may not be a noble gas. Previously, it was thought to be a gas, but now ** indicates that it would be solid under standard conditions because of relativistic factors. Reference.

Cl2O7 (chlorohydride heptaoxide) is a colorless, oily, volatile liquid. Its melting point is 182°K and its boiling point is 355°K. Dichloride heptaoxide is a strong oxidizing agent, which is relatively stable, but when it heats above 393k, it is**.

Dichloride heptaoxide is a compound with the chemical formula Cl2O7 and is the anhydride of perchloric acid. It can be prepared by the reaction of perchloric acid and phosphorus pentoxide. 2 HCO4 + P4O10 Cl2O7 + H2P4O11 Dichlorine heptaoxide is easily decomposed by heat:

cl2o7 → cl2 + o2 δh = 135 kj/mol

It is a transition fit of the base hole system, look up the table for the reference hole with a tolerance of + for 40 mm and the shaft with a tolerance of + for 40 mm, the maximum interference mm, the maximum clearance mm. There is also an excess and a gap is a transitional fit.

40h7 n6 look at the reference book lookup table. Learn about tolerances and fits. There are books on general mechanical drawing and mechanical design.

When the base hole is made, the basic deviation of the reference hole is h, and the basic deviation (lower deviation) is zero. The basic deviation of the shaft is a clearance fit between a and h, a transition fit between j-n, and an interference fit between p-zc.

In the case of the base shaft system, the basic deviation of the reference axis is h, and the basic deviation (upper deviation) is zero. The basic deviation code of the hole corresponds to the change, and various fits are obtained. By learning to understand the diagram of the basic deviation series, you can estimate the nature of the fit.

The uppercase h is the base hole system, and the lowercase h is the base shaft system.

The nature of the flame core substance can be flammable.

The burning of the candle is not the combustion of the paraffin solid, but the ignition device ignites the cotton core, and the heat released melts the paraffin solid, revaporizes, and turns the hail into paraffin vapor, which is combustible.

At the moment when the candle is blown out, a wisp of white smoke can be seen, and the white smoke can be lit with a burning match, which can rekindle the candle, so it can be proved that the white smoke is a solid tiny particle produced by the condensation of paraffin vapor.

You are asking about the experiment of inserting a glass tube into the flame boiling in the hidden hole of a candle, and the answer is: the possible properties of the trembling front of the flame core substance are: flammable, it is a colorless gas.

The flame core temperature of the flame is lower than that of the peripheral flame, and it can melt and disassemble or burn the glass tube; The high temperature outside the flame core can make the glass tube melt or burn.

The flame core is an organic substance, which is amorphous and does not have a fixed melting and boiling point.

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Water with a pH value is alkaline water, and weakly alkaline water is good for health. However, it also depends on the mineral composition and content in it, if there is no problem, you can drink it.

Water with a pH is alkaline water.

Acidic, the normal pH value is equal to 7 is greater than 7 alkaline, less than 7 acidic.

Acidic, alkaline above pH7, the larger the value, the stronger the alkalinity;

pH below 7 acidity, the smaller the value, the stronger the acidity.

pH=7 is acidic, pH below 7 is acidic, pH=5 is acidic.

You say it's pH, and it's weakly acidic, and it's bounded by pH7.

Sodium pyrosulfate (Na2S2O7) is one of the two sulfuric acids S=O bond is removed from O, and S is connected to the O of the C=O bond on the other land acre to form S-O-S. Two hydroxyl hydrogens are replaced by NA. Pyrosulfuric acid is heated in water to regenerate sulphuric acid, which is more acidic than coke sulphuric acid.

Sodium peroxysulfate (Na2S2O8) is S-O-S to S-O-O-S, and all peroxyacids have strong oxidizing properties.

Pyroic acid is produced by the removal of two acids from one molecule of water.

Similarly, pyrosulfuric acid is produced by dehydration of two sulfuric acids, and sodium pyrosulfate is its sodium salt.

The structural formula is that each sulfur is attached to two double-bonded oxygen and an oxygen anion, and there is an O between sulfur and sulfur to connect them.

Properties, can be regarded as Na2SO4 + SO3 It can be used as a good melting agent to dissolve some substances that are insoluble in strong acids and alkalis (such as chromium oxide), sodium peroxysulfate, also known as sodium sulfate.

It has peroxide slag suspicion bonds. It is in sodium pyrosulfate that the oxygen between the two sulfurs is replaced by a peroxy group. The sulfate has strong oxidation, and under the catalytic bend of silver ions, divalent manganese can be oxidized to high dream acid.