1. Calculate the wavenumber and frequency for the below: Yellow light emitted from a sodium lamp has a wavelength (λ) of 580 nm 2. Calculate and provide the number of electrons for the following: H+2 O+2 H2 3. Calculate the wavelength using the following details: Mass of electron is 9.1 × 10–31 kg and K.E. is… Continue reading Few Important Questions
Category: Ch 2 – Structure of Atom
Common terminologies used
Electrons – These subatomic particles orbit around the nucleus. They are negatively charged particles and found in definite energy levels orbiting the nucleus. Protons – Theses subatomic particles are found in the nucleus. They are positively charged particles and belong to the nucleons group. Neutrons – Theses subatomic particles are found in the nucleus. They… Continue reading Common terminologies used
Introduction
As discussed in the previous chapter, according to Dalton’s atomic theory, atoms are the building blocks of matter. In the year 1808, John Dalton proposed atomic theory saying that atom is an indivisible particle of matter. By the end of the nineteenth century, experiments proved that atoms comprise of three particles viz protons, neutrons, and… Continue reading Introduction