why are actinides called inner transition elements?
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Lanthanides and actinides are called inner transition elements because they are a group of elements that are shown as the bottom two rows of the periodic table. ... Lanthanides and actinides belong to the f-blockelements, which means that they have filled up their f-orbitals with electrons.
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The reason why Lanthanides and Actinides are located at the bottom of the periodical table is because of their properties and in the block in which electrons fill up. The lanthanides include elements 58 to 71 (fill out the 4f subshell) and the actinides include elements 89 to 103 (fill out the 5f subshell).
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Naming ionic compounds with transition metals isn't too hard either. They are named like the binary compounds, with the cation first, then the anion with -ide added to it, but you have to take into account the variations of the metal ions. You do this by adding Roman numerals in parenthesis to the cation.
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The period 7 inner transition metals (actinides) are thorium (Th), protactinium (Pa), uranium (U), neptunium (Np), plutonium (Pu), americium (Am), curium (Cm), berkelium (Bk), californium (Cf), einsteinium (Es), fermium (Fm), mendelevium (Md), nobelium (No), and lawrencium (Lr).
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The rare earth elements are marked with a red outline. Why are all rare earth elements are technically transition elements? Strictly speaking, transition elements are the elements in groups 3 to 12 of the periodic table. The rare earth elements, in their widest sense, are Sc, Y and the lanthanides, La to Lu.
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Transition metals are able to put more than eight electrons in the shell that is one in from the outermost shell. Think about argon (Ar).
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For example, the all of the elements in group 3 beginning with scandium, all end in “d1”. The “f block” elements are those at the bottom of the periodic table that we call the lanthanide and actinide groups. These elements' electron configurations always end with one or more “f electrons.”
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The transition metals were given their name because they had a place between Group 2A (now Group 2) and Group 3A (now Group 13) in the main group elements. Therefore, in order to get from calcium to gallium in the Periodic Table, you had to transition your way through the first row of the d block (Sc → Zn).
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Lanthanoides and actinoids are a group of 28 elements that involve the filling of the f -orbitals. They are also known as the inner transition elements because they are present in between the transition elements. However, in the periodic table, they are are shown separately at the bottom.
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The nonmetals arsenic (As), tellurium (Te) and selenium (Se) are also named like the transition metals, and can form either cations or anions. Rule 2: anions.
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The f block elements are the lanthanides and actinides and are called the inner transition elements because of their placement in the periodic table due to their electron configurations.
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The transition elements are metals. They have high melting points and densities, and are strong and hard. They form coloured compounds and act as catalysts.
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Actinide Series of Metals There are two rows under the periodic table: the lanthanide and actinide series. The lanthanide series can be found naturally on Earth. Only one element in the series is radioactive.
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The inner transition metals are found in the f-block, usually put at the bottom of the Periodic Table. ... They are almost as reactive as the alkali metals, and all actinoids are radioactive, so they have little commercial significance. However, the radioactive elements can be used in nuclear power plants or as weapons.
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What is the difference between a transition metal and an F element? The transition elements are in the d-block, and in the d-orbital have valence electrons. They can form several states of oxidation and contain different ions. Inner transition elements are in the f-block, and in the f-orbital have valence electrons.
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Transition elements (also known as transition metals) are elements that have partially filled d orbitals. IUPAC defines transition elements as an element having a d subshell that is partially filled with electrons, or an element that has the ability to form stable cations with an incompletely filled d orbital.
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Actinides are the 15 elements with atomic numbers from 89 to 103. They are named after the first element in the series, actinium. The actinides group includes mostly man-made elements with only a few exceptions such as uranium and thorium.