PERIODIC TABLE in 1 Shot: All Concepts & PYQs Covered || JEE Main & Advanced
JEE Wallah・2 minutes read
The session covers element classification, historical milestones, and key concepts, emphasizing quick revision and understanding. Concepts like ionization enthalpy, electron gain enthalpy, and electronegativity are explained in detail for group elements, with mnemonic aids provided for memorization.
Insights
- The session focuses on enhancing studies for 11th class students, covering the classification of elements and periodic properties with an emphasis on important concepts and previous year questions.
- The historical development of element classification is discussed, starting from Lavoisier's simple classification to Mendeleev's periodic table and the Modern Periodic Table.
- Uncle Dobereiner introduced triads like Lithium, Sodium, Potassium, Chlorine, Bromine, Iodine, Calcium, Strontium, and Barium, emphasizing quick revision related to 10th standard topics.
- Lothar Mayer's curve and Moseley's experiment with X-rays are highlighted, providing insights into element classification based on atomic mass and number.
- The significance of names and symbols in IUPAC nomenclature, as well as mnemonic aids for remembering elements in different groups and blocks, are discussed.
- The concepts of ionization enthalpy, electron gain enthalpy, and electronegativity are explained, with detailed examples and trends provided to aid in understanding periodic properties.
- The importance of understanding factors like hydration enthalpy, lattice enthalpy, and ionic mobility in predicting chemical behavior accurately is emphasized, along with specific examples and calculations to illustrate these concepts.
Get key ideas from YouTube videos. It’s free
Recent questions
What is the significance of Mendeleev's periodic table?
Mendeleev's periodic table is a crucial historical development in the classification of elements. Mendeleev arranged elements based on increasing atomic mass and similar properties, leaving gaps for undiscovered elements. His table predicted the properties of these missing elements, showcasing the periodicity of elements' properties. This organization laid the foundation for the Modern Periodic Table, which is based on atomic number rather than atomic mass. Mendeleev's contributions revolutionized the understanding of element classification and paved the way for further advancements in chemistry.
How does electron affinity impact stability?
Electron affinity plays a vital role in determining the stability of an element. If an element has a positive electron affinity, it indicates a desire to gain electrons for stability. Elements like beryllium, magnesium, nitrogen, and noble gases exhibit positive electron affinity. On the other hand, negative electron affinity signifies instability, as the element does not want to accept additional electrons. Understanding electron affinity is crucial in predicting an element's reactivity and chemical behavior, as it directly influences the element's stability and tendency to form bonds.
What is the relationship between ionization enthalpy and metallic character?
Ionization enthalpy and metallic character are inversely related in the periodic table. Lower ionization enthalpy indicates that less energy is required to remove an electron from an atom, leading to higher metallic character. Cesium, for example, has the least ionization enthalpy in the periodic table, contributing to its high metallic character. Elements with low ionization enthalpy tend to readily lose electrons and exhibit metallic properties, such as conductivity and malleability. Understanding this relationship is essential in comprehending the behavior of metals and their properties in chemical reactions.
How does electronegativity impact chemical behavior?
Electronegativity is a crucial concept in chemistry that influences an element's ability to attract bonded electrons towards itself. Elements with higher electronegativity values tend to attract electrons more strongly, leading to polar covalent bonds and specific chemical behaviors. Fluorine, the most electronegative element, exhibits a strong pull on electrons in a bond. Understanding electronegativity values helps predict the nature of chemical bonds, reactions, and the overall behavior of elements in compounds. It provides insights into the distribution of charge in molecules and the reactivity of different elements in various chemical environments.
What is the significance of hydration enthalpy in chemistry?
Hydration enthalpy is a crucial concept in chemistry that relates to the energy released when an ion is surrounded by water molecules. The calculation of hydration enthalpy is proportional to the charge on the ion and inversely proportional to its size. This phenomenon impacts the hydrated radius and ionic mobility of ions in solution, influencing various chemical processes. Understanding hydration enthalpy helps explain the behavior of ions in aqueous solutions, their solubility, and interactions with other substances. It plays a vital role in determining the stability and reactivity of ions in different chemical environments.
Related videos
Vedantu JEE Made Ejee
Classification of Element & Periodicity in Properties Class 11 Full Chapter in 60 Minutes ⌛
Sourabh Raina
Classification of elements |20 Important questions |Class 11 Chemistry|Sourabh Raina
BYJU'S - Class 9 & 10
Atoms and Molecules Class 9 Science (Chemistry) One Shot (Concepts+)Questions | CBSE Class 9 Exams
Vedantu Master Tamil
Classification of Elements & Periodicity of Properties | NEET 2023 | Shimon Sir | V Master Tamil
Vedantu JEE English
JEE 2024: Periodic Properties Class 11 One Shot | 1 Month 11th Done | JEE Chemistry #jeepreparation