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What else can I help you with?
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
What element is kr 5s24d105p4?
The electron configuration kr 5s² 4d¹⁰ 5p⁴ corresponds to the element tellurium (Te). In this configuration, "kr" indicates that the configuration starts from krypton, followed by the filling of the 5s, 4d, and 5p orbitals. Tellurium has an atomic number of 52, placing it in group 16 of the periodic table.
How was the periodic table discovered or made?
It all started with the discovery of individual elements like gold, silver, copper. The discovery of the number of elements increases, therefore the scientists classified the elements on the basis of their properties in the periodic table.
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.
What atom has 4 protons and 3 neutrons?
Since it has 3 protons, look up element #3 in the periodic table. That element happens to be lithium. The specific isotope is lithium-7, where 7 is the sum of 3 + 4. Finally, you may want to look up "Lithium" or "Isotopes of lithium" in the Wikipedia (or in some other online reference) to check whether such an isotope actually exists.
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 element has 6 valence electrons and 2 energy levels and is a non metal?
The element you are describing is oxygen. It has 6 valence electrons and 2 energy levels, placing it in group 16 of the periodic table as a nonmetal.
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
What was Seaborg's last major change to the Periodic Table?
Seaborg's last major change to the Periodic Table was the actinide concept. He proposed placing the actinide series below the lanthanide series to create the extended table and highlight the similarities between the two series.
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.
What element has 121 electrons and can be found in the same group as Zinc?
Oh, dude, that element you're talking about is Cadmium. It's got 121 electrons and it's chilling in the same group as Zinc on the periodic table. So, like, they're basically neighbors in the cool kids' section of the table.
How was the periodic table discovered or made?
It all started with the discovery of individual elements like gold, silver, copper. The discovery of the number of elements increases, therefore the scientists classified the elements on the basis of their properties in the periodic table.
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 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.
What atom has 4 protons and 3 neutrons?
Since it has 3 protons, look up element #3 in the periodic table. That element happens to be lithium. The specific isotope is lithium-7, where 7 is the sum of 3 + 4. Finally, you may want to look up "Lithium" or "Isotopes of lithium" in the Wikipedia (or in some other online reference) to check whether such an isotope actually exists.
Do you play Monopoly?
you simply try to run your opponents out of business by buying all of the property and placing hotels and houses on your property without going bankrupt.
