Answer the following questions 11. Explain about Bohrs model of an atom
Answers
Explanation:
According to Bohr Atomic model, a small positively charged nucleus is surrounded by revolving negatively charged electrons in fixed orbits. He concluded that electron will have more energy if it is located away from the nucleus whereas the electrons will have less energy if it located near the nucleus.
The postulates given by Neils Bohr are:
Electrons revolve around the nucleus in a fixed circular path termed “orbits” or “shells” or “energy level.”
The orbits are termed as “stationary orbit.”
Every circular orbit will have a certain amount of fixed energy and these circular orbits were termed orbital shells. The electrons will not radiate energy as long as they continue to revolve around the nucleus in the fixed orbital shells.
The different energy levels are denoted by integers such as n=1 or n=2 or n=3 and so on. These are called quantum numbers. The range of quantum number may vary and begin from the lowest energy level (nucleus side n=1) to the highest energy level. Learn the concept of an Atomic number here.
The different energy levels or orbits are represented in two ways such as 1, 2, 3, 4… or K, L, M, N….. shells. The lowest energy level of the electron is called the ground state. Learn the concept of Valency here in detail
Explanation:
electrons revolve around the nucleus in certain permissible paths called orbits
electron in each orbit has definite energy
energy of an electron in each orbit remains constant as long as it revolves around the nucleus
an electron moves from lower energy levels to higher energy level when it gains energy
an electron gives out energy while jumping from higher energy level to lower energy level