The common oxidation state of the elements of the lanthanoids series is +3. The principal and common oxidation state are +3. Some elements also... View Article
In the above equation, P is known as the Probability factor. In chemical kinetics, the pre-exponential factor or A factor is the pre-exponential... View Article
Asteres planetai, 'wandering stars', for star-like objects which apparently moved over the sky, was the term employed by Greek astronomers.... View Article
When two resistors are connected in parallel, the effective area of a cross-section through which the current can pass, increases. Since, the... View Article
The mass of the moon is 1/100 times and its radius 1/4 times that of earth. As a result, the gravitational attraction on the moon is about... View Article
One electron is involved in the oxidation of KMnO4 in a basic medium. KMnO4 oxidised in acidic, basic as well as in neutral medium. Let us have... View Article
In the formation of the P4 molecule, the P atom uses sp3 hybrid orbitals. Thus, the p-character in hybrid orbitals is 75%. Phosphorus is one... View Article
Face centered and body centred belongs to centred unit cells. Unit Cell is the smallest part (portion) of a crystal lattice. It is the simplest... View Article
When a molecule has trigonal bipyramidal geometry bond angles are 120°, 90°. Trigonal bipyramidal: In this type of structure five atoms are... View Article
The trachea connects the larynx with the two bronchi. The trachea or the windpipe rises below the larynx and moves down to the neck. The walls of... View Article
Tungsten is a suitable metal for Thermionic emission, has a high melting point of 3655 K but its work function is high at about 4.52 eV(electron... View Article
The Glomerular filtrate consists majorly of water and other constituents such as amino acids, glucose, potassium, sodium, urea, uric acid and... View Article
Respiration is a metabolic process that occurs in all organisms. It is a biochemical process that occurs within the cells of organisms. In this... View Article
The ceruminous glands or wax glands produce cerumen or wax, which traps dust and other particles and prevents them from entering the ear. It... View Article
The increase in length of a rod on heating depends on its initial length, its rise in temperature and its material. Factors on which length of... View Article
Electric current will stop flowing when a potential difference is zero. It means two ends are at the same potential. Current does not flow... View Article
The Methyl group is an activating group. Activating groups attached to the benzene ring increase the reactivity of benzene towards electrophilic... View Article
