1 u n (d) Lig-Li-L1) 33. For which of the following molecule significant p + 0? JEEM 2014 Kinetic A gas due to

Explain giving reasons which of the following sets of quantum number are not possible (a ) n=0, l =0 m_(l) = 0, m_(s ) =+ (1)/(2) ( b) n=1 , l = 0 m_(l) = 0, m_(s ) = - (1)/(2) ( c) n=1 , l = 1, m_(l ) = 0, m_(s ) = + (1)/(2) (d ) n= 2, l = 1, m_(l ) = 0, m_(s ) = (1) /(2) ( e) n=3, l = 3, m_(l) = 3, m_(s ) = + (1)/(2) (f ) n=3, l = 1, m_(l) = 0, m_(s) l = + (1)/(2)

Explain giving reasons, which of the following sets of quantum numbers are not possible. a) n = 0, l = 0 m_l =0 , m_s = + 1//2 b) n = 1, l = 0, m_l = 0 , m_s = +1//2 c) n = 1, l = 1 m_l = 0 , m_s = + 1//2 d) n = 2, l = 3 m_l = 0 , m_s = -1//2 e) n = 3, l=3 m_l = -3, m_s = + 1//2 f) n = 3, l = 1 m_l = 0 , m_s = + 1//2

How many molecules are present in 0.224 L of a gas at N.T.P.?

On the basis of the postulates of kinetic theory of gases, it is possible to derive the mathematical expression, commonly known as kinetic gas equation. PV = 1/3 m n u^3? where, P= Pressure of the gas, V a volume of the gas, m=Mass of a molecule, n = Number of molecules present in the given amount of a gas and u = root mean square speed For one mole of gas, PV = RT and n=N_A 1/3 m N_a u^2 = RT or 2/3 .1/2m N_A u^2 = N_A [1/2mN_Au^2 = KE "per mole"] ,2/3K.E. = RT implies K.E. 3/2RT Average kinetic energy per mol does not depend on the nature of the gas but depends only on temperature. This, when two gases are mixed at the same temperature, there will be no rise or decrease in temperature unless both react chemically. Average kinetic energy per molecule = ("Average K.E. per mole")/N = 3/2(RT)/(N) implies 3/2kT where k is the Boltzmann constant Which of the following expressions correctly represents the relationship between the average molar kinetic energies of CO and N_2 molecules at the same temperature ?

Using s, p, d notations, describe the orbital with the following quantum numbers. n = 1, l = 0