Questions and Answers
What is the element that possesses an incompletely filled d or f sublevel in either the free state or in one of its compounds?
Transition metal
What is an element that resists the effect of atmosphere although it's highly reactive?
Noble gas
What substance is attracted to an external magnetic field due to the presence of unpaired electrons in its orbitals?
Paramagnetic substance
What is the substance that repels from an external magnetic field due to the presence of paired electrons in its orbitals?
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What is the magnetic property for the ions, atoms, or molecules with unpaired electrons in their orbitals?
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What is the collection of the particles of fine iron ore to obtain large particles suitable for reduction?
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What is the process of heating iron ore strongly in air for drying and getting rid of impurities?
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What compound decomposes thermally into iron II oxide and carbon dioxide?
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What are the elements in which the sublevel 3d is filled successively?
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What are the elements in which the sublevel 4d is filled successively?
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What is an alloy where the atoms forming it have the same diameter and chemical properties and crystal structure?
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What is the formation of the thin layer of oxide that protects the metal from further reaction called?
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What is an alloy in which chemical combination between the elements of the alloy takes place?
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What is the process of removing impurities from iron ore to increase the percentage of iron?
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What are the elements in which the sublevel 5d is filled successively?
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What are the elements in which the sublevel 6d is filled successively?
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What is an alloy where smaller atoms are introduced in the spaces of the crystal lattice of the pure metal atoms?
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What are the elements whose general formula is (n-1)d1:10, ns1:2?
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What is the number of unpaired electrons in the d sublevel in d block elements?
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What is the element that possesses an incompletely filled d or f sublevel in either the free state or in one of its compounds?
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What is the name of the alloy that consists of copper and tin?
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What is the name of the alloy that consists of copper and zinc?
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What is an iron ore which is red and easily reduced?
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What is an iron ore that is black and has magnetic properties?
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What is the hydrated form of iron III oxide?
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What is the iron ore known as iron II carbonate?
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The electronic configuration of [Ar],3d10, 4S2 is for which metal?
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The electronic configuration of the ……………ion is *Ar+,3d5 while the electronic configuration of the …………ion is *Ar+, ↑ ↑ ↑ ↑.
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The element that has the electronic configuration [Ar],3d10, 4S1 is?
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The compound (FeCl2) is?
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Stainless steel is an alloy formed from iron and?
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The electronic configuration of the elements of the group before the last group of the d block is?
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Limonite is one of the iron ores that occurs in oasis area, its chemical formula is?
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What is the name of the iron ore known as siderite?
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Study Notes
Scientific Terms in Chemistry
- An incompletely filled d or f sublevel defines a transition element in its free state or in compounds.
- Elements that resist atmospheric effects despite high reactivity are categorized as noble metals.
- Substances with unpaired electrons are attracted to magnetic fields, indicating paramagnetism.
- Substances with only paired electrons repel magnetic fields, categorizing them as diamagnetic.
- Magnetic properties are determined by the presence of unpaired electrons in atoms, ions, or molecules.
- Fine iron ore is processed through a collection method to produce larger particles for reduction.
- Heating iron ore in air removes impurities and dries the ore, making it ready for processing.
- Thermal decomposition of certain compounds can yield iron(II) oxide and carbon dioxide.
- Transition elements fill the 3d sublevel successively in the periodic table.
- Transition elements fill the 4d sublevel successively as we move across the table.
- An alloy with identical atom sizes, chemical properties, and crystal structure is classified as an isomorphous alloy.
- A protective oxide layer forms on metals, preventing further reactions.
- Alloys may form through chemical bonding between different elements.
- Purifying iron ore enhances the iron content, increasing the efficiency of reduction processes.
- Transition elements fill the 5d sublevel and the 6d sublevel as we advance in the periodic table.
- Some alloys are formed by introducing smaller atoms into the lattice of a pure metal, known as interstitial alloys.
- The general formula for certain transition metals is represented as (n-1)d1:10, ns1:2.
- The number of unpaired electrons found in d sublevels influences the magnetic characteristics of d-block elements.
- A traditional alloy comprising copper and tin is widely known as bronze.
- Brass refers to an alloy made from copper and zinc.
- Hematite is a red iron ore that is easily reduced in chemical reactions.
- Magnetite, a black iron ore, exhibits magnetic properties.
- Goethite is a hydrated iron(III) oxide occurring in nature as an ore.
- Siderite is identified as iron(II) carbonate.
- The most reactive transition element is manganese, among first-row transition metals.
Selection Questions Key Answers
- Electronic configuration [Ar], 3d10, 4s2 corresponds to zinc.
- Cr2+ has the configuration [Ar], 3d4 and Co3+ has [Ar], 3d6.
- Copper exhibits the electronic configuration [Ar], 3d10, 4s1.
- FeCl2 is classified as paramagnetic and colored due to unpaired electrons.
- Stainless steel is formed from iron and chromium, enhancing corrosion resistance.
- The electronic configuration for d-block elements in the group before the last is given as (n-1)d, ns.
- Limonite’s chemical formula is 2Fe2O3.3H2O, indicating its hydrated state.
- Siderite, identified as iron(II) carbonate, is another form of iron ore.
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Description
Test your knowledge of key scientific terms in chemistry, particularly focusing on transition elements and their properties. This quiz covers topics such as magnetic properties, processing of iron ore, and the characteristics of noble metals. Perfect for students looking to reinforce their understanding of chemistry terminology.
