Which orbital in each of the following pairs is lower in energy in a many electron atom? 2s, 2p

The energy of an electron of 2p_(x) orbital is :

Which of the following contains maximum number of lone pairs of electrons on the central atom ?

List the value of n and l for the following orbitals : 2p

Whichof the following orbitals are possible ? IP, 2s, 2p and 3 f

Bohr's model of hydrogen atom In order to explain the stability of atom and its line spectra, Bohr gave a set of postulates: An electron in an atom revolves in certain circular orbit around the nucleus. These are the orbits for which mvr=(nh)/(2pi) In these allowed orbits, the electron does not radiate energy. When an electron jumps from higher energy level E_(n_2) to lower energy orbit E_(n_1) , radiation is emittd and frequency of emitted electron is given by v=(E_(n_2)-E_(n_1))/h . Further the radius of the n^(th) orbit of hydrogen atom is r=(n^2h^24piepsilon_0)/(4pi^2me^2) and energy of the n^(th) orbit is given by E_n=-13.6/n^2 eV . If 13.6 eV energy is required to ionise the hydrogen atom, then enegy required to remove an electron from n=2 is:

Bohr model is a system consisting of small, dense nucleus surrounded by orbiting electrons. The electrons travel is defined circular orbits around the nuclues which orbital angular moementum is an integral multiple of h/(2pi) . While rotating in allowed orbits (stationary orbits) the electron does not radiate energy. electromagnetic radiations are emitted when the electron jumps from a higher orbit (E_(ni)) to a lower orbit (E_(nf)) . The total energy of the electron in an atom is negative. It suggests that

General instructions same as in chapter 1. Assertion:An electron jumps from lower to higher orbit in an atom. Reason:The electron absorbs energy to jump from lower to higher orbit.

State Bohr’s postulates for atomic model and using them derive an expression forthe total energy of an electron revolving in a stationary nth orbit of hydrogen atom.

In a hydrogen atom, which orbital is higher in energy than a 3s-orbital?