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Periodic Trends in Properties of Elements Video Lecture | Chemistry Class 11 - NEET
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FAQs on Periodic Trends in Properties of Elements Video Lecture - Chemistry Class 11 - NEET
| 1. What are periodic trends in properties of elements? |  |
Ans. Periodic trends refer to the patterns or variations in the properties of elements as you move across or down the periodic table. These trends include atomic radius, ionization energy, electronegativity, electron affinity, and metallic character.
| 2. How does atomic radius change across a period in the periodic table? | |
Ans. Atomic radius generally decreases across a period from left to right. This is because as you move across a period, the number of protons in the nucleus increases, resulting in a stronger attractive force on the electrons and a smaller atomic radius.
| 3. What is the trend of ionization energy as you move down a group in the periodic table? | |
Ans. Ionization energy generally decreases as you move down a group in the periodic table. This is because the outermost electrons are farther away from the nucleus, making it easier to remove them. Additionally, the shielding effect from the inner electrons reduces the attractive force on the outer electrons.
| 4. How does electronegativity vary across the periodic table? | |
Ans. Electronegativity generally increases across a period from left to right. This means that elements on the right side of the periodic table tend to attract electrons more strongly, while elements on the left side tend to lose electrons easily. Electronegativity also tends to decrease as you move down a group.
| 5. What is the trend of metallic character across the periodic table? | |
Ans. Metallic character generally increases as you move down a group and decreases as you move across a period. Elements on the left side of the periodic table are more metallic, while elements on the right side are more non-metallic. Metallic character is associated with properties such as conductivity, luster, and malleability.
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