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1.Which of the following is not a d-block element? (a) Zn(b) Sc(c) Cu(d) Pb Answer: (d) Pb Explanation: Lead (Pb) is a p-block element, whereas Zn, Sc, and Cu belong to the d-block. 2. Which transition metal has the highest melting point? (a) Fe(b) W(c) Ti(d) Zn Answer: (b) W (Tungsten) Explanation: Tungsten has the highest melting … Read more
The studies of heat, energy and work is called thermodynamics. It is essential to know how energy moves between systems and affects the state of matter. Heat, internal energy and work are the three core ideas of thermodynamics. Heat A difference in temperature causes heat, a type of energy, to move from one body to … Read more
The actinoids are also known as actinides and a group of 15 metallic elements with atomic numbers 89–103 that range from actinium (Ac) to lawrencium (Lr) in the periodic table. These elements are recognized for their radioactive characteristics and are found in the periodic table’s f-block. Metallic elements Position in the Periodic Table Like lanthanoids, … Read more
Zeroth Law of Thermodynamics is essential to understand thermal equilibrium and measuring temperature. It is known as the “Zeroth Law” because it introduces the fundamental idea of temperature and constitutes the basis of thermodynamics, although having been developed after the first and second principles of thermodynamics. Zeroth Law The Zeroth Law of Thermodynamics states: “If … Read more
Lanthanoids are also called as lanthanides and are a group of 15 elements in the periodic table, ranging from Lanthanum (La, atomic number 57) to Lutetium (Lu, atomic number 71). These elements belong to the f-block of the periodic table and are also known as rare earth metals. Periodic table The name “lanthanoids” comes from … Read more
A cup of hot coffee kept on the table after pouring it. We discover after a while that the coffee has reached room temperature. Have we ever surprised, that why this occurs? The idea of thermal equilibrium seems to be come here. Thermal equilibrium describes how heat energy transfers between objects until they achieve the … Read more
Groups 3 through 12 of the periodic table contain the d-block elements, sometimes called as transition elements. These elements are essential to many industrial and chemical processes and are distinguished by the filling of the d-orbitals. Their electrical arrangements is vital to understand their physical characteristics, bonding, and chemical behaviuor. Periodic table General Electronic Configuration … Read more
A hot cup of tea gradually cools to room temperature when left on the table. Have you ever questioned how and why this occurs? Newton’s Law of Cooling, which was developed by Sir Isaac Newton, governs the cooling process. This law describes the relationship between an object’s rate of cooling and the temperature differential between … Read more
Reactant molecules combine to create new products, which are known as a chemical reaction. However, have we ever thought the true causes of molecular reactions? What causes some reactions to occur more quickly than others? A correct and rational explanation for these questions can be found in the Collision Theory of Chemical Reactions. Molecules What … Read more
Why a metal spoon becomes heated when left in a hot cup of coffee? Or why, despite the fact that both are at the same temperature, walking barefoot on tiles in the winter seems colder than walking on a carpet? All of these commonplace occurrences are connected to heat transfer or the movement of heat … Read more