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S-Block Elements (Both Group 1 and Group 2) Video Lecture - JEE
FAQs on S-Block Elements (Both Group 1 and Group 2) Video Lecture - JEE
| 1. What are the s-block elements in Group 1 and Group 2? |  |
Ans. The s-block elements in Group 1 are known as alkali metals, which include elements like lithium (Li), sodium (Na), potassium (K), etc. The s-block elements in Group 2 are known as alkaline earth metals, which include elements like beryllium (Be), magnesium (Mg), calcium (Ca), etc.
| 2. What are the common properties of Group 1 elements? | |
Ans. Group 1 elements, or alkali metals, share several common properties. They have a single valence electron, making them highly reactive. They are soft metals with low melting and boiling points. They exhibit a silvery-white luster and are good conductors of heat and electricity.
| 3. What are the common properties of Group 2 elements? | |
Ans. Group 2 elements, or alkaline earth metals, also share common properties. They have two valence electrons and are less reactive compared to Group 1 elements. They are harder and denser than alkali metals, with higher melting and boiling points. They also have a silvery-white luster and are good conductors of heat and electricity.
| 4. What are some important uses of alkali metals? | |
Ans. Alkali metals have various important uses. Sodium and potassium are commonly used in the production of soaps, detergents, and glass. Lithium is used in batteries, particularly in rechargeable lithium-ion batteries. Potassium is also used in fertilizers, while rubidium and cesium have applications in atomic clocks and research.
| 5. What are some important uses of alkaline earth metals? | |
Ans. Alkaline earth metals find several applications as well. Calcium is essential for the formation and maintenance of bones and teeth. Magnesium is used in alloys, as a coagulant in water treatment, and in fireworks. Beryllium is used in nuclear reactors and aerospace applications due to its high strength and low density.
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