Based on results of his study of atomic x-ray spectra, Moseley discovered a relationship that replaced atomic mass as the crite-rion for ordering the elements. By what criterion are the elements now ordered in the periodic table? Give an example of a sequence of element order that was confirmed by Moseley’s findings.

Q: Explain the contributions of Meyer and Moseley to the periodic table.

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Q: According to general trends in the periodic table, predict which element in each of the following…

A: According to general trends in the periodic table, which element in each of the given pairs has the…

Q: Identify and encircle the element that has the greater atomic radius. 1. krypton and francium

A: When we move across the period from left to right in a periodic table, there is decrease in atomic…

Q: Describe the basic features of the periodic table

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Q: 5. a) Explain the term periodic trend when applied b) Explain why atomic radius decreases across…

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Q: Explain why atomic radius decreases as we move to the right across a period for main-group elements…

A: In the main-group elements, the atomic radius decreases on moving from left to right across a period…

Q: A. A main group element with the valence electron configuration 4s2 is in periodic group It forms a…

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Q: the orbital diagram of the following elements

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Q: Explain why the s-block of the periodic table is twogroupswide, the p-block is six-groups wide, and…

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Q: Explain the 2 trends of atomic radius in the periodic table. state the trend and explain why

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Q: This question is about d-block elements. (a) Most d-block elements are also classified as transition…

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Q: Summarize the trend in metallic character as a function of position in the periodic table. Is it the…

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Q: Define atomic radius. For main-group elements, describe the observed trends in atomic radius as you…

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Q: Use the alkali metals and alkaline earth metals as examples to show how we can predict the chemical…

A: Following are the appropriate answers of the given questions.

Q: Explain the trend of ionization energy for transition metal across the period.

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Q: Directions: Draw the orbital diagram of the following elements and identify the type of magnetic…

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Q: What are the exceptions to the periodic trends in first ionization energy? Why do they occur?

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Q: Write the predicted ground-state electron configuration for molybdenum. Include an orbital box…

A: To write the ground state electron configuration for molybdenum.

Q: Suppose you were trying to find a substitute for Na+ for some application. Where would you begin…

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Q: Show the orbital-filling diagram for BrBr (bromine). Order subshells by energy, with the…

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Q: Based on the ionization energies of the alkali metals, which alkali metal would you expect to…

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Q: Give the main features of f-block elements.

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Q: Provide the explanations of the following phenomena.    The electron configuration of Cr is…

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Q: Which one of the following statements is the best explanation for the increase of ionisation energy…

A: Given: energy of the alkaline earth metals increases when going up in a group.

Q: The lightest halogen is also the most chemically reactive, and reactivity generally decreases as we…

A: The halogens are basically "non-metals" and exist in "p-block". Halogens depict "high…

Q: Explain, using Coulomb's law, the general trend in second and successive ionization energies across…

A: Periodic trends

Q: Determine whether each element is a main-group element. tellurium

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Q: Which element has the largest radius? Ga, Al, or In

A: Given, elements Ga , Al and In  All of these belongs to the same group.

Q: Before the element scandium was discovered in 1879, it was known as “eka-boron." Predict the…

A: Scandium has an Electronic configuration of [Ar]4s2 3d1 and valence is 3 and it in between Calcium…

Q: Identify: - Element in Group IVA that has the lowest atomic size - Element with a valence…

A: The atomic radius of a chemical element is the mean distance from the center of the nucleus to the…

Q: Which element below would have the largest atomic radius?* Barium Beryllium Calcium Magnesium

A: Generally in a periodic table form left to right in a period the atomic radius decreases while in a…

Q: Describe the organization of elements in the periodic table.

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Q: how can you use the periodic table or electron configuration to find out if an element is…

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Q: What makes carbon such a unique element? a. Elemental carbon comes in two forms, diamond, and…

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Q: In the same period of the Periodie Table the atomie radii are largest for clements of group: I…

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Q: Define atomic radius. For main-group elements, describe the observed trends in atomic radius as…

A: Atomic radius and its trends in atomic radius are explained below-

Q: Using the idea of dobereiner’s triads, what conclusion could have been made about magnesium, had…

A: Dobereiner’s triads : To segregate and group similar elements together  Sir Johanan Wolfgang…

Q: Using periodic trends, arrange the following elements by increasing the first ionization energy: Ar,…

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Q: Question attached

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Q: Suppose you were trying to find a substitute for K+ for some application. Where would you begin your…

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Q: Determine whether the following elements are paramagnetic or diamagnetic: A. Rhuthenium B. Rubidium

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Q: 36. According to general trends in the periodic table, predict which element in each of the…

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Q: On the basis of periodic trends, determine the element in each pair with the higher first ionization…

A: NOTE ; Since you've posted multiple sub-parts,we'll solve first three sub-parts for you. To get the…

Q: metallic character increases as you move to the right acrosss a row in the periodic table and…

A: The correct option is  C)metallic character decreases as you move right to the periodic table and…