In 1829, J.W. Dobereiner organized the aspects right into groups of triads, 3 facets via comparable chemical properties. In addition, he noticed that one facet in each triad had properties through values the was midway between the various other 2 aspects. However, this company technique had one flaw: it couldn"t accept newly uncovered facets.

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Which of these sets of elements have similar physical and also chemical properties?a. oxygen, nitrogen, carbon, boronb. strontium, magnesium, calcium, berylliumc. nitrogen, neon, nickel, niobium
Lithium and also potassium are both facets similar to those of sodium, because they are both in the very same period as sodium.
The regular table has a lot indevelopment. It systematically organizes the elements in a fashion that presents the similarities among facets in the same family members. In addition, the periodic table provides for routine trends that can be visualized as one moves throughout rows and also dvery own columns. The regular table also consists of the chemical icons of all aspects, the atomic and mass numbers of each facet, and occasionally the way electrons are dispersed in the power levels of the atoms. Periodic tables additionally typically use some device to show the state of issue presented by each element at conventional problems. Lastly, the periodic table has a line that separates nonsteels from steels and also shows the metalloids in between the two major groups of aspects. Sometimes, regular tables additionally use shade identification to identify the various teams of atoms.
Elements can be categorized as noble gases, representative aspects, shift steels, or inner transition steels based on their electron configurations.
The facets potassium and also sodium have equivalent chemical properties bereason they have the very same variety of valence electrons (1).
Is this electron configuration a representative aspect, shift steel, or noble gas.
The electron configuration is that of Krypton, clearly a noble gas.

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Which of the adhering to are transition metals: Cu, Sr, Cd, Au, Al, Ge, Co?
Transition steels belengthy to the d block. From the list of aspects provided, we watch that Cu, Cd, Au, and also Co are all shift elements, bereason they are in the d block.
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