Bohr’s model

Niels Bohr proposed the concept of energy levels in his Bohr’s Atomic Model in 1913. His Hydrogen Model explained the stability of electrons revolving in orbits, called stationary orbits, around the nucleus. The energy level is the distance from the nucleus of an atom to the orbit in which the electrons revolve. An electron requires […]

Atoms are the smallest unit, consisting of the positively charged nucleus surrounding the negatively charged electrons. Electron cloud refers to the group of electrons (negatively charged) circulating around the nucleus or a molecule, or electron cloud is the region with a high probability of containing electrons. Electron Shell is the outermost area of an atom

All group 13 elements are referred to as the boron family. The periodic table is divided into different groups: the s,p,d, and f blocks. This division is based on the number of valence electrons. For example, if the valence electron occurs in the d subshell, it is grouped under the d block, and so on. 

The seven crystal systems Cubic- In this type of unit cell lengths a, b and c all are equal in length and the angles between them alpha, beta and gamma are also equal to 90 degrees bravais lattices in this type are 3 that is primitive, face centred and body centred examples of cubic unit

The Bohr model states that electrons revolve around the nucleus at constant energy levels. Progressive orbits from the nucleus exist at high energy levels. When electrons return to a low energy level, they emit energy in the form of light. Electrons revolve around the nucleus in an orbit of fixed size and strength. The strength

Proposed by Neils Bohr in 1913, his atomic theory revolves around the structure of the hydrogen atom. In the quantum hypothesis,  electrons can occupy certain energy states around the nucleus. Electrons move around a core which is the nucleus, in closed orbits. The theory assumes that energy is released as radiation when electrons leap to

The Bohr model of a hydrogen atom was proposed by scientist Neils Bohr in the year 1913. According to the Bohr model formula of hydrogen, hydrogen atoms have a positively charged nucleus, which possesses protons, and neutrons. They are surrounded by negatively charged electrons and are seen to orbit around the nucleus in atomic shells.

Introduction The emission and absorption spectra of atomic hydrogen and hydrogen-like ions with low atomic numbers are explained by Bohr’s model of the hydrogen atom. It was the first model to use a quantum number to describe atomic states and to postulate the quantisation of electron orbits within the atom. The development of quantum mechanics,

Anomalous behaviour makes a particular element different from other members that are part of the same family. The anomalous behaviour of any element is usually due to factors such as atomic size, high electronegativity and the absence of electrons in the d-orbital. The small size means that net force on electrons increases, and hence effective