CBSE Class 11 Chemistry Classification Of Elements And Periodicity Worksheet Set D

CBSE Class 11 Chemistry Worksheet - Classification of Elements and Periodicity (4) 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.  

Time: 30 min

Ch#3 : Classification of Elements and Periodicity in Properties -04

Full Marks: 20

Instructions:

1. All questions are compulsory

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

Q1 - Explain Newland’s law of octave. (2 Marks)

Q2 - What are Dobereiner’s triads? (2 Marks)

Q3 -

(i) What was Mendeleev’s periodic law?

(ii) What are the advantages of his periodic table? (3 Marks)

Q4 - Give reasons for the following

(i)The size of Ga is smaller than Al.

(ii)BF3 acts as Lewis acid.

(iii) CCl4 does not undergo hydrolysis.

(iv)PbCl2 does not react with chlorine to form PbCl4.

(v)CO is poisonous in nature. (5 Marks)

Q5 - Why IUPAC names are assigned to elements having atomic number > 100? (1 Mark)

Q6 - Write the modern day name of the element which Mendeleev named as Eka – aluminium and Eka – silicon (1 Mark)

Q7 - Name the transition metal which has the highest melting point. (1 Mark)

Q8 - Why does the first element of each group of p- block of modern periodic table shows anomalous properties? (2 Marks)

Q9 - Predict the formula of the stable binary compounds that would be formed by the following pair of elements.

(i)Silicon and oxygen.

(ii)Gallium and chlorine.

(iii)Barium and bromine. (3 Marks)

Please refer to the link below for CBSE Class 11 Chemistry Worksheet - Classification of Elements and Periodicity (4)