Chemistry

The phenomenon of spontaneous disintegration of certain atomic nuclei resulting in the emission of radioactive rays is called radioactivity. Unstable atomic nuclei will spontaneously decompose…

The time required to disintegrate one half of any radioactive substance is called half life period (t½). The half life period (t½) of a radioactive…

Binding energy of Nucleus Whenever a nucleus is formed, certain mass is converted into energy. Hence for atom, the atomic mass is lower than the…

To explain the spontaneous decay of radioactive elements, Rutherford and Soddy put forward the theory of radioactive disintegration. According to this theory the quantity of…

Le – Chateliar principle: When a system is at equilibrium, a change in any one of the factors (such as temperature, pressure, concentration) upon which…

Uses of coordination compounds (a) Dyes and Pigments Coordination compounds have been used from the earliest times as dyes and pigments, for example madder dye…

Haemoglobin in the red blood cells carries oxygen from the lungs to the tissues. It delivers the oxygen molecule to myoglobin in the tissues. When…

Chlorophyll is a magnesium – porphyrin complex. The magnesium is at the centre of the modified porphyrin ring septeon (corrin). The oxidation state of magnesium…

Nature of haemoglobin and myoglobin Both are having the same structure excepting the fact that myoglobin is a monomer and haemoglobin is a tetramer. Both…

Chemical equilibrium: Chemical equilibrium is the state where the rate of forward and backward reaction will be equal in the reversible reaction. Equilibrium is when…