CBSE Class 11 Chemistry Worksheet - Structure of Atom (2) CBSE,CCE and NCERT students can refer to the attached file. All educational material on the website has been prepared by the best teachers having more than 20 years of teaching experience in various schools. The study material available on our website for all CBSE classes and subjects have been prepared by teachers from all over the country. All study material has been carefully designed keeping into mind the latest CBSE examination trends.
J.E.E./A.I.P.M.T.Foundation - XI Chemistry Worksheet
Time: 30 min
Ch#2 : Structure of Atom-02
Full Marks: 20
1. All questions are compulsory.
2. Please give the explanation for the answer where applicable.
Q1 -Find the wavelength of radiation emitted when an electron from infinity falls to stationary state 1 in a hydrogen atom. (RH = 1.09 x 107 m-1) (3 Marks)
Q2 - Explain Hund’s rule with the help of example of nitrogen. (3 Marks)
Q3 - Derive de Broglie’s relationship. What is its significance? (5 Marks)
Q4 - The frequency of a radiation is 6 x 1014 cycles / sec. Find out the wavelength of radiation in nanometer. (2 Marks)
Q5 - An isotope of atomic mass 27 has 14 neutrons in the nucleus. What is the atomic number, name and symbol of element. (2 Marks)
Q6 - Write the designation for orbitals with following quantum numbers-
(a) n = 3, l = 1 (b) n = 5, l = 2 (2 Marks)
Q7 - Who discovered neutrons? (1 Mark)
Q8 - Which element does not have any neutron in it? (1 Mark)
Q9 - Give two examples from everyday life where cathode ray tubes are used? (1 Mark)
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