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Which property would be most useful in placing a newly discovered element in group 18 on the periodic table?
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What does the horizontal placing of the elements in the periodic table signify?
It signify the group of the element. For example, the first group is called alkali metals. When it is moving from left to right of the periodic table, the atomic radius decreases, the ionization energy increases, and the electronegativity increases.
How can you predict the properties of missing elements?
yes, properties of an element depends on its atomic number and atomic mass unless it is an exception and the atomic number and atomic mass of unknown elements are known by placing it in periodic table
How was the periodic table discovered or made?
The periodic table was developed by Dmitry Mendeleev in 1869. He organized the known elements based on their chemical properties and atomic weights, placing elements with similar properties in the same vertical columns. Mendeleev's periodic table provided a structure and system to understand and predict the behavior of elements, and it has since been expanded and refined as new elements have been discovered.
How could modern periodic law remove various anomalies of mendeleevs periodic table?
1.) The atomic mass in Mendeleev's periodic table does not increase regularly. therefore, it was impossible to predict the number of elements between two elements.The Modern periodic table has been made according to the increasing atomic number (Modern Periodic Law states that 'The properties of an element are the periodic function of its atomic number). The atomic number gives us the number of protons in the nucleus of an atom. the atomic number increases by one as we go from one element to the next. thus, this makes it easy to ascertain how many undiscovered elements may be there between two known elements.2.) Mendeleev's periodic table was made according to increasing atomic masses. we know that of an element have same chemical properties and atomic number, but different atomic masses. So, the concept of isotopes can not be satisfied.The Modern periodic table is according to increasing atomic numbers. Therefore, the problem of isotopes is easily dealt with.
What are the defects in modern periodic table?
1. The wrong placing of the element Hydrogen in the periodic table. It should be placed on the right side of the periodic table, on the group of non-metals because Hydrogen is a non-metal element but in the periodic table it is placed on metals element .
What is the name of the lightest element on the periodic table How and who discovered it?
Hydrogen is the lightest element on the periodic table. Henry Cavendish collected Hydrogen by placing Zinc in an acid and originally called it inflammable air. However, Paracelsus of Switzerland had noticed 250 years before that Iron placed in acid gave off a gas and that gas would burn: but did not study it further.
What does the horizontal placing of the elements in the periodic table signify?
It signify the group of the element. For example, the first group is called alkali metals. When it is moving from left to right of the periodic table, the atomic radius decreases, the ionization energy increases, and the electronegativity increases.
Who developed your modern day periodic table?
The last major changes to the periodic table resulted from Glenn Seaborg's work in the middle of the 20th Century. Starting with his discovery of plutonium in 1940, he discovered all the transuranic elements from 94 to 102. He reconfigured the periodic table by placing the actinide series below the lanthanide series. In 1951, Seaborg was awarded theNobel Prize in chemistry for his work. Element 106 has been named seaborgium (Sg) in his honor.Although Dmitri Mendeleev is often considered the "father" of the periodic table, the work of many scientists contributed to its present form.
How can you predict the properties of missing elements?
yes, properties of an element depends on its atomic number and atomic mass unless it is an exception and the atomic number and atomic mass of unknown elements are known by placing it in periodic table
How you can know that which element is mor reactive?
It depends on the placing of the element in the periodic table. For the far left, group 1, the most reactive element is the one closest to the bottom. For the far right, the most reactive is the one closest to the top. The table follows certain trends, depending on it's placement in the periodic table. By learning these trends, you'll be able to tell at a glance. For example, Francium, the bottom-left most element only ever exists for a fraction of a second; it's so reactive, it reacts when it is created.
How was the periodic table discovered or made?
The periodic table was developed by Dmitry Mendeleev in 1869. He organized the known elements based on their chemical properties and atomic weights, placing elements with similar properties in the same vertical columns. Mendeleev's periodic table provided a structure and system to understand and predict the behavior of elements, and it has since been expanded and refined as new elements have been discovered.
What was Louis Daguerre's invention used for?
Louis Daguerre discovered that he could make the image stay by placing the plate in salt water. Louis Daguerre discovered that he could make the image stay by placing the plate in salt water. Louis Daguerre discovered that he could make the image stay by placing the plate in salt water. Louis Daguerre discovered that he could make the image stay by placing the plate in salt water.
What is the use of grating element in laser experiment?
By placing the grating element in the path of laser light , then we can observe some dots on the screen that is present back side of grating element.
How could modern periodic law remove various anomalies of mendeleevs periodic table?
1.) The atomic mass in Mendeleev's periodic table does not increase regularly. therefore, it was impossible to predict the number of elements between two elements.The Modern periodic table has been made according to the increasing atomic number (Modern Periodic Law states that 'The properties of an element are the periodic function of its atomic number). The atomic number gives us the number of protons in the nucleus of an atom. the atomic number increases by one as we go from one element to the next. thus, this makes it easy to ascertain how many undiscovered elements may be there between two known elements.2.) Mendeleev's periodic table was made according to increasing atomic masses. we know that of an element have same chemical properties and atomic number, but different atomic masses. So, the concept of isotopes can not be satisfied.The Modern periodic table is according to increasing atomic numbers. Therefore, the problem of isotopes is easily dealt with.
Heat capacity of element?
Generally, you can find the heat capacity for an element by placing a small amount of the element in a beaker of boiling water. Then you allow the element to sit in the water until it becomes the same temperature of the water.
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