The lanthanides or lanthanoid series isa group of transition metalslocated on the periodic table in the first row (period) below the main body of the table. The lanthanides are commonly referred to as the rare earth elements (REE), although many people group scandium and yttrium together under...
Answer to: Explain the definition of the metalloids and the nonmetals on the periodic table and list at least three examples for each of them. By...
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Which of the elements in the following periodic table are d-transition elements? Which elements in the periodic table are referred to alkali metals? Which element is a metalloid? (a) iron (b) silicon (c) sodium (d) cadmium. What are the characteristics of metalloids?
The transition elements form the main bulk of the periodic table. In these elements, their d orbital gets filled. They are the d block elements. They belong to groups 3 to 12. The two detached rows below the main table are elements whose f orbitals are filled. The first isolated row is...
Which group of the periodic table of elements forms only 1+ ions? Why?What types of ions do the metals and the nonmetallic elements form? Do the metals lose or gain electrons in doing this? Do the nonmetallic elements gain or lose electrons in doing this?
The rare earth elements (REEs) or rare earth metals (REMs) are a group of metals found within the same ores and possessing similar chemical properties. Scientists and engineers disagree on exactly which element should be included in a list of the rare earths, but they generally include the fi...
Please note that the elements do not show their natural relation towards each other as in the Periodic system. There you can find the metals, semi-conductor(s), non-metal(s), inert noble gas(ses), Halogens, Lanthanoides, Actinoids (rare earth elements) and transition metals. Calcium Ca...
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Antonius Johannes van den Broek (4 May 1870, Zoetermeer – 25 October 1926, Bilthoven) was a Dutch amateur physicist notable for being the first who realized that the number of an element in the periodic table (now called atomic number) corresponds to the charge of its atomic nucleus. This...