Why Line Spectrum is Unique Character of an Atom?
Line spectrum is created by transferring excited electron from one energy level to another. Where atom of every molecule has individual electronic configuration and electron…
Chemistry
Describe Limitation of Bohr’s Model
Limitation of Bohr’s model: Bohr’s model of an atom could not explain the line spectra of atoms containing more than one electron called multi-electron atoms.…
Laboratory Preparation of Phosphorus Pentachloride
Phosphorus pentachloride is a pale greenish-yellow solid with the formula PCl5. It can be prepared by the action of dry chlorine on phosphorus trichloride. As…
Laboratory Preparation of Phosphorus Trichloride
Phosphorus trichloride is a compound of phosphorus and halogen chlorine. Preparation: Phosphorus Trichloride (PCl3) is prepared by heating white phosphorus in a current of dry…
Describe Physical and Chemical Properties of Lead
Physical properties of Lead Lead is a bluish grey metal with a bright luster. It is soft and can be cut with a knife and…
Explain Purification and Uses of Lead
Purification of Lead: Lead extracted by the above method contains impurities such as silver, copper, tin, bismuth, gold and iron. It is refined by the…
Describe on Aufbau Principle
Aufbau principle: Electrons first enter into lower energy orbital and subsequent electron enters into higher energy orbital gradually. Because lower energy orbital is more suitable…
Explain Pauli’s Exclusion Principle
Pauli’s Exclusion Principle: No two electrons in an atom can have same values for all the four quantum numbers. Pauli’s exclusion principle also states that…
Describe on Hund’s Principle
Hund’s Principle: According to this rule, electron pairing will not take place in orbital of same energy (same subshell) until each orbital is singly tilled.…
Describe on Silicones with Structure and Uses
The silicones are a group of organ silicon polymers. They have a wide variety of commercial uses. The complete hydrolysis of SiCl4 yields silica SiO2,…
Load More