NEET Exam > NEET Videos > Inorganic Chemistry for NEET > Group-2 Elements: Alkaline Earth Metals (General Properties)
Group-2 Elements: Alkaline Earth Metals (General Properties) Video Lecture | Inorganic Chemistry for NEET
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FAQs on Group-2 Elements: Alkaline Earth Metals (General Properties) Video Lecture - Inorganic Chemistry for NEET
| 1. What are alkaline earth metals? |  |
Ans. Alkaline earth metals are a group of elements in the periodic table consisting of beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are called alkaline earth metals because their oxides are alkaline and form alkaline solutions when dissolved in water.
| 2. What are the general properties of alkaline earth metals? | |
Ans. The general properties of alkaline earth metals include having two valence electrons, forming +2 cations, having low electronegativity, being good reducing agents, and having high melting and boiling points compared to alkali metals. They also have a shiny metallic appearance and react with water to form alkaline solutions.
| 3. Why are alkaline earth metals reactive? | |
Ans. Alkaline earth metals are reactive because they have two valence electrons in their outermost energy level. These electrons are relatively easy to remove, making alkaline earth metals highly reactive and prone to forming positive ions. However, their reactivity is lower compared to alkali metals due to their higher ionization energies.
| 4. How do alkaline earth metals react with water? | |
Ans. Alkaline earth metals react with water to form alkaline solutions and release hydrogen gas. The reaction becomes more vigorous as we move down the group. For example, magnesium reacts slowly with cold water, while calcium reacts more vigorously to produce calcium hydroxide and hydrogen gas.
| 5. What are some common uses of alkaline earth metals? | |
Ans. Alkaline earth metals have various industrial and biological uses. For instance, calcium is commonly used in construction materials, such as cement, and in the production of steel. Magnesium is used in lightweight alloys and in the production of fireworks. Barium compounds are used in medical imaging, while strontium compounds are used in fireworks to create red color.
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