CBSE Class 11 Chemistry Structure Of Atom Worksheet Set C

CBSE Class 11 Chemistry Worksheet - Structure of Atom (3) 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-03

Full Marks: 20


1. All questions are compulsory.

2. Please give the explanation for the answer where applicable.

Q1 - The uncertainty in momentum of an electron is 1.0 x 10-5 Kg ms-1 . What is the uncertainty in its position? (2 Marks)

Q2 - Find the de Broglie wavelength in Å of a particle with mass 1g and velocity 100m/s. (2 Marks)

Q3 - Find wavelength of photon having energy 3.03 x 10-19 J. (2 Marks)

Q4 - What will be the uncertainty in velocity of an electron (mass of electron = 9.1 x 10-28 g) moving with a velocity of 3.0 x 104 ms-1 accurate up to 0.011%?

Q5 -Write the electronic configuration of following atoms/ions - –, Cr, Mg2+, O–, Ca

(Atomic number of F = 9, Cr = 24, Mg = 12 ,O = 8, Ca = 20) (5 Marks)

Q6 - Which of the following species are isoelectronic? Na+, O2-, F-, Ca2+, K+ (2 Marks)

Q7 - (i) Write values of n and l for 4f orbital.

(ii) Write all possible values of l and m for n = 2. (2 Marks)

Q8 - Write one isobar of (1 Mark)

Q9 - Which series of lines of the hydrogen spectrum lie in the visible region? (1 Mark)

Q10 - What do you mean that energy of the electron is quantized? (1 Mark)


Please refer to the link below for CBSE Class 11 Chemistry Worksheet - Structure of Atom (3)



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