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Alkaline Earth Metals Video Lecture | Inorganic Chemistry

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FAQs on Alkaline Earth Metals Video Lecture - Inorganic Chemistry

1. What are alkaline earth metals?
Ans. Alkaline earth metals are a group of chemical elements in the periodic table. They include beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). These metals have similar properties, such as high melting points, low densities, and are highly reactive.
2. What are the main uses of alkaline earth metals?
Ans. Alkaline earth metals have various applications in different industries. For example, magnesium is used in the production of lightweight alloys and is also an essential element for human health. Calcium is widely used in construction materials, such as cement and plaster. Barium compounds are used in X-ray imaging, and strontium compounds are used in pyrotechnics.
3. How do alkaline earth metals react with water?
Ans. Alkaline earth metals react with water, but their reactivity increases as you move down the group. Beryllium does not react with water, while magnesium reacts slowly. Calcium, strontium, and barium react vigorously with water, producing hydrogen gas and forming metal hydroxides. Radium, being highly radioactive, is not commonly studied for its reactivity with water.
4. What are the similarities and differences between alkaline earth metals and alkali metals?
Ans. Alkaline earth metals and alkali metals both belong to Group 2 of the periodic table and share some similarities. They are both highly reactive metals and have low electron affinities. However, there are also significant differences. Alkali metals are softer and have lower melting points than alkaline earth metals. Alkaline earth metals are less reactive with water compared to alkali metals.
5. Are alkaline earth metals found naturally in their pure form?
Ans. No, alkaline earth metals are not found naturally in their pure form because they are highly reactive. They readily react with other elements and compounds in the environment. Instead, alkaline earth metals are commonly found in the Earth's crust as various minerals or as compounds in ores. They are extracted and purified through different processes to obtain them in their elemental form.
40 videos|91 docs|41 tests
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