Describe the development of the Periodic Table?

Q: How many elements are in the 6th period of the periodic table?

A: Periods are the horizontal rows in the periodic table.

Q: Describe the arrangement of the elements in the modern periodic table.

A:

Q: What are the properties of Metals and Nonmetals?

A: Elements are the class of pure substance that is made up of only one kind of particles. They can be…

Q: what is the chemical formula for potassium phosphate

A: Potassium phosphate is a common term for salts of potassium and phosphate ions.

Q: lum.ecollege.com/course.html?courseld=15432274&HepID=2b3e48e6520860bfd5591538a4a5a27b#10001 Search..…

A: The change in temperature taking place is,

Q: What are lanthanide elements?

A: What are lanthanide ?

Q: Describe the basic organizational feature of the periodic table of the element.

A: The Dimitri Mendeleev gave the modern law of periodic table, which states that the properties of the…

Q: Where on the periodic table are metalloids found?

A: ANSWER

Q: Who designed the periodic table of the elements?

A: The detailed solution of your question given below-- Several scientists work in the periodic table…

Q: ou as teacher would like to revise the periodic table in a creative way with your learners in Grade…

A: The periodic  table is also known as the periodic table of elements and it is the tabular display of…

Q: can you take a look at two elements located into different corners of the Periodic Table - Lithium…

A: An atom is composed of three main sub-atomic particles; electrons, neutrons and protons. The atomic…

Q: Describe Rutherford’s nuclear model of the atom. What was revolutionaryabout his model?

A: According to the Rutherford atomic model: The positively charged particles and most of the mass of…

Q: Discuss Neutron-to-Proton Ratio?

A: In an atom, the atomic number indicates the number of protons present in an atom of an element. The…

Q: Describe Thomson’s model of the atom. How might it account for the production of cathode rays?

A: To find: The Thomson's model of the atom.  How might it account for the production of cathode rays

Q: How is the periodic table organized ?

A: To find: How is the periodic table organized.

Q: What is period in a periodic table?

A: Metals, non metals and semi-metals are placed in the periodic table according to their properties.…

Q: What did Henry Moseley and Marie Curie contribute to the development of the periodic table

A: There was important contribution from Henry Moseley and Marie Curie.

Q: The halogen family, C ding. (p28)

A:

Q: Suppose that you face a problem similar to Mendeleev: You must predict the properties of an element…

A: The properties of an element are determined by the protons, neutrons and the electronic…

Q: Define the term an element?

A:

Q: How did Mendeleev arrange the elements?

A: The chemical elements are categorized in a tabular form based on their properties and the tabular…

Q: Process wherein light elements such as helium and hydrogen form.

A: Process by which, Light elements such as helium and hydrogen form is?

Q: Describe the general structure of the nuclear model of the atom

A: Rutherford's atomic model is known as the general structure of the nuclear model of atom. This model…

Q: What is the most recent addition to the periodic table?

A: In recent years, four elements are discovered, and all the discovered elements are radioactive in…

Q: What is the chemical element? X

A: Here we have asked about the information for the chemical element 'X'. We can tell about this as…

Q: hat is the background of Frederick Sanger

A: Frederick Sanger was a British scientist. He was born in Rendcomb, United Kingdom on 13 August 1918…

Q: what is the chemical formula for calcium phosphate?

A: First write the name of cation and then name phosphate with their charge  For writting a compound…

Q: Was Democritus’s proposal of the existence of atoms based on scientific methods or ideas? Explain

A:

Q: What is an element?How are elements arranged in the periodic table?

A: The elements starting from hydrogen having atomic number 1 to the element with atomic number 118 are…

Q: Why we need to detrimine the concentration of trace elements?

A:

Q: atoms of hydrogen (H

A:

Q: what are 2 incompatible elements? are calcium and chlorine incompatible?

A: Rubidium, Barium, Uranium, and Lanthanum are incompatible elements.

Q: Elements of a group in the periodic table

A: The periodic table is the arrangement of chemical elements according to their atomic number. These…

Q: What do you mean by Hydrogen ?

A:

Q: How are calcium and phosphorus related?

A: In comparison with calcium, plasma phosphorus exists in both organic and inorganic forms, including…

Q: why Rutherford's model of an atom was considered to be unstable?

A: Rutherford’s experiment:Rutherford suggested that there is something at the center of the metal…

Q: look up dmitri mendeleev and find out how he constructed the original periodic table. present at…

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Q: does hydrogen exist as an atomic element in the air?

A: Interpretation: Does hydrogen gas exist as an atomic element in the air is to be determined.

Q: What is a period in the periodic table? From what does it derive its name?

A: The elements are arranged in a periodic table. The properties of elements have been studied and…

Q: How elements are grouped in the periodic table ?

A:

Q: what is the physical state of element C? what is the physical appearance of element C? what is the…

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Q: Give the names and chemical symbols for the three isotopes of hydrogen.

A: The name and chemical symbols for the three isotopes of hydrogen has to be given,

Q: A brief summary indicating Thomson major contribution to the atomic theory.

A: J.J. Thomson was the first to propose a model of the atom. He considered the atom as a sphere in…

Q: Display the groups of the periodic table and their charges.

A: There are 18 groups in periodic table as follows : Group 1- Alkali metal Group 2- Alkaline earth…