Organic chemistry is a branch of chemistry that deals with the study of organic compounds, which are molecules containing carbon atoms bonded to other atoms, such as hydrogen, oxygen, nitrogen, sulfur, and others. Organic chemistry is important for several reasons: Understanding the nature of life: Organic chemistry provides insights into the structures and functions of … Read more
What are Quantum numbers? Electrons revolve around the nucleus at different energy levels. There are four quantum numbers (n, l, m, and s) that describe the size, shape, orientation, and spin directions of energy levels of electrons in an atom. These numbers are called quantum numbers. These are- a) Principal Quantum Number(n) b) Subsidiary Quantum … Read more
Bohrs Atomic Model Scientist Neils Bohr gave some corrections to Rutherford’s atomic model in 1913. This corrected model is called the Bohr’s atomic model. The main postulates of this model are – a) The electron moves around the nucleus in a circular motion, about an axis. This circular motion is called an energy level or … Read more
Radioactive Isotopes and Their uses There are some isotopes the nucleus of which spontaneously synthesize themselves and emit alpha(ɑ), beta(β), and gamma(γ) rays. They are called radioactive isotopes. So far, scientists have gathered information more than 3000 isotopes. Some of them are natural and some are laboratory made. Controlled use of radioactive isotopes has made … Read more
Formula One Hydrogen molecule is expressed as H2. It means, there are two Hydrogen atoms in that molecules. Again, one molecule of water is expressed as H2O, meaning, it contains two Hydrogen atoms and an Oxygen atom. The following table shows formulas of some common molecules: Name of Molecule & Formula Nitrogen = N2 Ammonia … Read more
Symbols of Elements The abbreviated form of English or Latin name of an element is called its symbol. Each element has its own symbol. There is a system of writing a symbol of an element. a) The first letter of an English name of an element is usually the symbol and that has to be … Read more
Atoms and Molecules Atoms are the smallest particles of elements that contain the characteristics of the elements. For example, Nitrogen atoms contain the characteristic features of nitrogen while oxygen atoms contain the same of oxygen. When two or more atoms remain connected with each other in a chemical bond, it is known as a molecule. … Read more
Elements and Compounds Elements Certainly, you have seen gold, silver, or iron. No matter how far you divide pure gold, you will get nothing but gold. The same is applicable in the cases with silver or iron. When divided, the matter that does not yield anything but itself is called an element. Besides the above … Read more