F.A & F.Sc

In the crystal lattice the cations and anions are held together by electrostatic forces of attractions. It means that their outer boundaries touch each other.  Read More →

The nature of bond in diamond is perfectly covalent.  Read More →

The element of low I.E need less energy to remove the electron. The element of high E.A accept the electron happily. So a strong ionic bond is formed.  Read More →

Isabel Person was the first nominated woman president in the world. Maria Estela Martinez Cartas de Peron (born February 4, 1931), better known as Isabel Martinez de Peron or Isabel Peron, is a former President of Argentina. She was also the third wife of another former President, Juan Peron. During... readmore

Rutherford’s model is based on the laws of motion gravitation. According to this model, the outermost electrons could not be stationary. If they were, they would gradually be attracted by the nucleus, till they fall into it.But for stable atomic structure the electrons were supposed to be moving... readmore

Orbitals having same energy are called degenerate orbitals.  Read More →

The nature of anode rays depends upon the nature of the gas, because every gas has its own nucleus.  Read More →

The velocity of photon of light is independent of its source. It is a constant parameters just like Plank’s constant.  Read More →

The mass of neutron is slightly more than that of a proton.  Read More →

Neutron is heavier than that of electron and is 1840 times greater in mass than the mass of electron.  Read More →