Out of the following pairs of electrons
(i) Calculate the total number of electrons present in 1 mole of methane . (ii) Find (a) the total number and (b) the total mass of neutrons in 7 mg of .14C. (Assume that mass of a neutron =1.675×10^−27g)
12
Nov
(i) Calculate the total number of electrons present in 1 mole of methane . (ii) Find (a) the total number and (b) the total mass of neutrons in 7 mg of .14C. (Assume that mass of a neutron =1.675×10^−27g) identify the pairs of electrons present in degenerate orbitals : Out of the following pairs of [...]
When an electric discharge is passed through hydrogen gas, the hydrogen molecules dissociate to produce excited hydrogen atoms. These excited atoms emit electromagnetic radiation of discrete frequencies which can be given by the general formula v¯=109677[1/n2i−1/nf2] What points of Bohr’s model of an atom can be used to arrive at this formula ? Based on these points derive the above formula giving description of each step and each term.
12
Nov
When an electric discharge is passed through hydrogen gas, the hydrogen molecules dissociate to produce excited hydrogen atoms. These excited atoms emit electromagnetic radiation of discrete frequencies which can be given by the general formula v¯=109677[1/n2i−1/nf2] What points of Bohr’s model of an atom can be used to arrive at this formula ? Based on [...]
Out of the following pairs of electrons, identify the pairs of electrons present in degenerate orbitals :
12
Nov
Out of the following pairs of electrons, identify the pairs of electrons present in degenerate orbitals : identify the pairs of electrons present in degenerate orbitals : Out of the following pairs of electrons November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NCERT Exemplar Class 11 ,