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Q: What gloves offer good pliability against harmful elements such as gasoline and alcohols?
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What are most of the elements against diagonal line on the periodic table?

semimeta


What type of curve would you get if the oxidation state of the elements in group1 were plotted against atomic number?

As th group1 elemnts exhibit only oxidation numberone in chemical compounds a straight line .


Does h2o and h2o2 represent the same compound?

No these formulae do not represent the same compound as the suffixes, the numbers against the elements are different. H2O is water, HOH H2O2 is hydrogen peroxide, HO-OH, a reactive bleaching agent.


What are 2 main divisions of the periodic table?

DEFINITION:The orderly arrangement of elements is called "PERIODIC CLASSIFICATION".INTRODUCTION: When a very large number of elements become known to scientists , it was felt that they must be arranged in a systematic order because a systematic classification provides a clear idea and information about the properties of elements and make it easier to predict the properties of different elements. This classification provides the inter-relationship of scientific facts.Early Attempts at Classification Of Element:In old days, element were arranged in the ascending order of their atomic masses.1.Law of Triads/ DOBEREINER'S TRIADS:In 1829, a German scientist Dobereiner made use of the relationship between atomic masses and properties of elements.Drawback:This rule is not for all the elements.2.NEWLAND'S law of octave:In 1866, a British scientist, Newlands, reported his "law of octave" by arranging elements according to increasing order of their atomic masses. He noticed that "Every eight element, starting form any point, approximately has similar properties".Newland's arrangement was applicable only to a few elements after that it was failed.3.LUTHER MEYER'S CLASSIFICATION:In 1864, a German Chemist Luther Meyer published on incomplete periodic table .He included about 56 elements arranged in a group from I to VIII. He plotted the values of different physical properties and obtained different curves .In these graphs, he observed that element with similar physical properties occupy similar positions in the curveFor example :Alkali metals occupy the peak of the curves.Halogen occur on the ascending portions of the curve.4.MENDELEEV'S PERIODIC TABLE:In 1869, a Russian chemist, Mendeleev, on the basis of physical and chemical properties discovered a relation known as "PERIODIC LAW".According to the law:"The properties of element are the periodic function of their atomic masses".Mendeleev arranged the known elements according to increasing order of their atomic masses because,according to him fundamental property of an element was atomic mass.He further divided and arranged these eight groups into subgroups.Mendeleev's periodic table was very precise and provided the basis of modern periodic classification.Original statement of Mendeleev's periodic law:1.The elements,if arranged according to their atomic weights show an evident periodicity of properties.2.Elements which are similar with regards to their chemical properties have atomic weights which are either nearly the same value or which increase regularly.3.The arrangement of the elements or of groups of elements in the order of their atomic weights,corresponds with their so called valencies.4.The elements which are most widely distributed in nature have small atomic weights and sharply defined properties.They are therefore typical elements.5.The magnitude of the atomic weight determines the character of an element.6.The discovery of many as yet unknown elements may be expected.7.The atomic weight of an element may sometimes be corrected by the aid of a knowledge of those of adjacent elements.8.Certain characteristic properties of the elements can be foretold from their atomic weights.MERITS OF MENDELEEV'S PERIODIC TABLEMendeleev's periodic table offered the following advantages in understanding the properties of elements.1. There was a regular gradation in physical and chemical properties of elements.2. The group number of an element indicates highest oxidation state that it can attain.3. There were many vacant spaces in Mendeleev's periodic table for the elements to be discovered.He named them Eka-Boron, Eka-Aluminium and Eka-silicone He also predicted the properties of these undiscovered elements including atomic masses.These elements were discovered as Sc ,Ga and Ge with same features as he predicted.4. Mendeleev's arrangement helped to correct atomic masses of a number of elements.DEMERITS IN MENDELEEV'S PERIODIC TABLE1. For placing the elements in proper groups,the order of the elements according to atomic mass was reversed in certain cases. He placed Iodine (127) after Tellurium (128) Potassium (39) and Ni (58)after Co (59).Which is against his periodic law but correct according to properties.2. Mendeleev's periodic table does not provide a clear idea about the structure of atom.3. Lanthanide and Actinide have been assigned places in the periodic table which is against the periodic law.4. Alkali metal and coinage metals (Cu,Ag and Au) which differ widely in properties are placed into the same group.5. There is no separate position for isotopes in his periodic table.6. The change in atomic mass of two successive elements is not constant. Hence it is not possible to predict the number of missing elements by knowing the atomic masses of two known elements. DIC TABLE1. For placing the elements in proper groups, the order of the elements according to atomic mass was reversed in certain cases. He placed Iodine (127) after Tellurium (128) Potassium (39) and Ni (58) after Co (59). Which is against his periodic law but correct according to properties.2. Mendeleev's periodic table does not provide a clear idea about the structure of atom.3. have been assigned places in the periodic table which is against the periodic law.4. Alkali metal and coinage metals (Cu, Ag and Au) which differ widely in properties are placed into the same group.5. There is no separate position for isotopes in his periodic table.6. The change in atomic mass of two successive elements is not constant. Hence it is not possible to predict the number of missing elements by knowing the atomic masses of two known elements.DEMERITS IN MENDELEEV'S PERIODIC TABLE1. For placing the elements in proper groups, the order of the elements according to atomic mass was reversed in certain cases. He placed Iodine (127) after Tellurium (128) Potassium (39) and Ni (58) after Co (59). Which is against his periodic law but correct according to properties.2. Mendeleev's periodic table does not provide a clear idea about the structure of atom.3.have been assigned places in the periodic table which is against the periodic law.4. Alkali metal and coinage metals (Cu,Ag and Au) which differ widely in properties are placed into the same group.5. There is no separate position for isotopes in his periodic table.6. The change in atomic mass of two successive elements is not constant. Hence it is not possible to predict the number of missing elements by knowing the atomic masses of two known elements.


What is a Explosives Vapour Detector?

It is a device for monitoring air quality, typically within a building, to warn against the build-up of explosive gases such as propane, methane, or gasoline vapor. These devices are commonly used in manufacturing facilities using highly volatile solvents (eg for degreasing) or storage facilities for such chemicals. Inexpensive, single-gas alarms (eg for propane) are avail for approximately $50 for recreational vehicles, to guard against a tank or line leak. Industrial grade monitors which provide telemetry back to a SCADA system will be many times that price.

Related questions

What gloves protect against hydraulic fluid's gasoline and alcohols?

Neoprene


When was Against the Elements created?

Against the Elements was created on 2002-07-13.


Can unleaded gasoline be used in an engine made for regular gasoline?

Unleaded gasoline is regular gasoline. Lead used to be added to gasoline to prevent engine knocking but the practice has been banned in most developed countries. 2nd Answer: There are some engines, a lot of them not in cars, that are made to use regular gasoline. They are designed so that the lead in regular old gasoline will build up on certain moving parts, and keep them sealed against engine pressures. Unleaded gas is not good for this type of engine, at all.


Do ridding gloves protect your hands against the elements?

yes


What are the release dates for Against the Elements - 2009 Blown Away 1-5?

Against the Elements - 2009 Blown Away 1-5 was released on: USA: 18 March 2009


What are the release dates for Against the Elements - 2009 Dangerous Path 1-1?

Against the Elements - 2009 Dangerous Path 1-1 was released on: USA: 18 February 2009


What are the release dates for Against the Elements - 2009 Escape Her Wrath 1-2?

Against the Elements - 2009 Escape Her Wrath 1-2 was released on: USA: 25 February 2009


What are the release dates for Against the Elements - 2009 Full Force 1-4?

Against the Elements - 2009 Full Force 1-4 was released on: USA: 11 March 2009


Who was a naturalist writer who pitted his protagonists against the elements?

Jack London


What are most of the elements against diagonal line on the periodic table?

semimeta


Does silicon hold up against fuel on a carb?

Silicone you buy at your local parts store or hardware store will be eaten by gasoline. There is an RTV gasoline resistant silicone. A Google search will give you results as to where to buy it.


What are the release dates for Against the Elements - 2009 Caught Off Guard 1-6?

Against the Elements - 2009 Caught Off Guard 1-6 was released on: USA: 25 March 2009