Oxidation States
Negative and Positive Oxidation state:
The elements of Group 16 exhibit a number of oxidation states (Above Table).
...
Wattless Current
The current in a.c. circuit is said to be wattles if the average power consumed in the circuit is zero.
The average power of an...
Zener Diode
Zener diode
Zener diode is a reverse biased heavily doped semiconductor (silicon or germanium) PN junction diode, which is operated exclusively in the breakdown region.
The...
Oxidation Reduction
Oxidation-Reduction
Besides reduction, some extraction is based on oxidation particularly for non-metal. For extraction of chlorine from brine.
PN Junction diode
PN Junction diode:
If one side of a single crystal of pure semiconductor (Ge or Si) is doped with acceptor impurity atoms and the other...
Nomenclature of Haloalkanes and Haloarenes
The common names of alkyl halides are derived by naming the alkyl group followed by the halide. Alkyl halides are named as halo-substituted hydrocarbons...
Effect of Temperature on Resistance
Temperature dependence of resistance:
When temperature increases, the no. of collisions increases due to more internal energy and relaxation time decreases. Therefore, Resistance increases.
Temperature Coefficient...
Oxides of Nitrogen
Oxides of nitrogen
Nitrogen forms a total of five oxides from +1 oxidation states to +5 oxidation state. The five oxides of nitrogen are N2O,...
Enzymes
Enzymes
Enzymes are biological catalysts. Chemically all enzymes are globular proteins.
Being proteins, they have colloidal nature and...
The Transition Elements (d-Block) – General Properties
Properties of d-Block elements:
Atomic Radii of d-Block elements:
The atomic radii of the transition metals lie in-between those of s- and...