Question

Describe Bohr's model of an atom? Describe Bohr's model of an atom

Answer 1

Answer:According to Bohr’s theory:

i. The atom consists of a small positively charged nucleus at its centre.

ii. The whole mass of the atom is concentrated at the nucleus and the volume of nucleus is smaller than the volume of the atom by a ratio of about 1:10.

iii. The nucleus contains all the protons and neutrons of the atom.

iv. The electrons of the atom revolve round the nucleus in definite circular paths known as orbits which are designated as K, L, M, N or numbered as n=1,2,3,4 outward from the nucleus.

v. Each orbit is associated with a fixed amount of energy. Therefore, these orbits are also known as energy levels or energy shells.

Answer 2

Explanation:

Bohr's model of atom

Niels Bohr proposed a new atomic model by giving a better explanation to the Rutherford model. This model is known as Bohr's model. Bohr model is utilized for giving a lucid explanation to the features of an atom. According to Bohr model , the revolving paths traced by electrons are called orbits or shells.

Main ideas of the Bohr model

• electrons revolve around the nucleus of an atom in fixed paths called orbits or shells.
• electrons revolve around the nucleus of an atom in fixed paths called orbits or shells.electrons in each shell have a definite energy. hence shells are also called Energy levels.
• electrons revolve around the nucleus of an atom in fixed paths called orbits or shells.electrons in each shell have a definite energy. hence shells are also called Energy levels.as long as an electron revolves in a particular orbit, its energy remains constant.
• electrons revolve around the nucleus of an atom in fixed paths called orbits or shells.electrons in each shell have a definite energy. hence shells are also called Energy levels.as long as an electron revolves in a particular orbit, its energy remains constant. the energy of the shells increases as the distance from the nucleus increases.
• electrons revolve around the nucleus of an atom in fixed paths called orbits or shells.electrons in each shell have a definite energy. hence shells are also called Energy levels.as long as an electron revolves in a particular orbit, its energy remains constant. the energy of the shells increases as the distance from the nucleus increases. The shells around the nucleus can be numbered from near the nucleus as 1,2,3,4,5......or represented by the letters K,L,M,N,O........