Chemistry

Isoelectronic species are a) CO, CN–, NO+, C22– b) CO–, CN, NO, C2– c) CO+, CN+, NO–, C2 d) CO, CN, NO, C2 C2 C2 d) CO C2– c) CO+ C22– b) CO– CN– Isoelectronic species are a) CO NO+ November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NEET Last 32 [...]

For given energy E = 3.03 x 10^-19 Joules corresponding wavelength is = 6.626 x 10^-34 J sec c = 3 x 10^8 m/sec For given energy E = 3.03 x 10^-19 Joules corresponding wavelength is = 6.626 x 10^-34 J sec c = 3 x 10^8 m/sec November 12, 2020 Category: Chapter 2 - [...]

The following quantum numbers are possible for how many orbitals? (s)n=3,l=2,m=+2 l2 m2 The following quantum numbers are possible for how many orbitals? (s)n=3 November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions ,

In hydrogen atom, energy of the first excited state is −3.4eV. Then find out the K.E. of the same orbit of H-atom. energy of the first excited state is −3.4eV. Then find out the K.E. of the same orbit of H-atom. In hydrogen atom November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry [...]

The value of Planck’s constant is 6.63 x 10^-34 Js. The velocity of light is 3.0 x 10^8 ms^-1. Which value is closest to the wavelength in metres of a quantum of light with frequency of 8 x 10^15 s? The value of Planck's constant is 6.63 x 10^-34 Js. The velocity of light is [...]

The frequency of radiation emitted when the electron falls from n=4 to n=1 in a hydrogen atom will be (Given : ionization energy of H=2.18×10^ −18 J atom^−1 and h=6.625×10^−34 Js) The frequency of radiation emitted when the electron falls from n=4 to n=1 in a hydrogen atom will be (Given : ionization energy of [...]

The energy of second Bohr orbit of the hydrogen atom is −328 kJ mol^−1, hence the energy of fourth Bohr orbit would be. hence the energy of fourth Bohr orbit would be. The energy of second Bohr orbit of the hydrogen atom is −328 kJ mol^−1 November 12, 2020 Category: Chapter 2 - Atomic Structure [...]

Given: The mass of electron is 9.11×10^–31Kg Planck constant is 6.626×10^–34Js, the uncertainty involved in the measurement of velocity within a distance of 0.1 Å is:- Given: The mass of electron is 9.11×10^–31Kg Planck constant is 6.626×10^–34Js the uncertainty involved in the measurement of velocity within a distance of 0.1 Å is:- November 12, 2020 [...]

Consider the following sets of quantum numbers. (i) n3 l0 m0 s+1/2 (ii) n2 l2 m1 s+1/2 (iii) n4 l3 m−2 s−1/2 (iv) n1 l0 m−1 s−1/2 (v) n3 l2 m3 s+1/2 Which of the following sets of quantum number is not possible ? The orbital angular momentum of a p-electron is given as : [...]

The measurement of the electron position is associated with an uncertainty in momentum, which is equal to 1×10^−18g cms^−1. The uncertainty in electron velocity is (mass of an electron is 9×10^−28g) The measurement of the electron position is associated with an uncertainty in momentum which is equal to 1×10^−18g cms^−1. The uncertainty in electron velocity [...]