Class 10 Science Chapter 2 Periodic Classification of Elements Exercise

Class 10 Chapter 2 Periodic Classification of Elements Exercise

We offer free Maharashtra Board Class 10 Science Chapter 2 Periodic Classification of Elements Exercise or questions answers. Our expert team have gone through this chapter and prepared Notes for the students who are facing difficulties in summarizing of this chapter. We assure you that you can score more marks by using our Pdf files. Let us tell you that all the questions answers in concern with this chapter are prepared by our expert teachers team. Here you will find three Pdf files, among them first Pdf files consists of Textbook Questions Answers whereas in second Pdf files you will get the additional extra questions for practices. In the third and last Pdf files, you will get full exercise of this chapter.

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Board Class Chapter
Maharashtra state Board Std 10Chapter 2 Periodic Classification of Elements

Class 10 Science Chapter 2 Periodic Classification of Elements Exercise or questions answers in Pdf format:

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Class 10 Science Chapter 2 Periodic Classification of Elements Notes:

As we go through the entire Class 10 Science Chapter 2 Periodic Classification of Elements, we can see there are so many questions asked meanwhile and students are expected to answers them. Some students may face some problem while answering it , but we promise you that after reviewing our answer, you will gain the confidence to answers such questions. Our expert team teacher have divided the solutions into several parts,which will help you to understand this chapter better. Have a look at the following parts:

  • Chapter 2 Periodic Classification of Elements (Can you recall?)
  • Chapter 2 Periodic Classification of Elements (Use your brain power)
  • Chapter 2 Periodic Classification of Elements (Observe/Discuss)
  • Chapter 2 Periodic Classification of Elements (Let’s Discuss)
  • Chapter 2 Periodic Classification of Elements (Observe)
  • Chapter 2 Periodic Classification of Elements (Let’s think)
  • Chapter 2 Periodic Classification of Elements (Paragraph based questions)
  • Chapter 2 Periodic Classification of Elements (Questions based on tables and charts)
  • Chapter 2 Periodic Classification of Elements (Activity based questions)
  • Chapter 2 Periodic Classification of Elements (Projects)

Class 10 Science Chapter 2 Periodic Classification of Elements: Question Bank

All those students who are preparing for the final exam and want to score more marks on board can refer to our question bank, among them are some questions may ask you in your final examination.

Beneath, in our Pdf documents, you get the Class 10 Science Chapter 2 Periodic Classification of Elements Exercise or questions answers, however our expert crew have faith in the query bank that allows you to help the students to get more marks.
Our expert team of teachers has prepared the best solutions to these questions. All the answers to these questions are given in our PDF file, which is given below. You can download it for your later study. In Our Pdf file of solutions of the Chapter 2 Periodic Classification of Elements, you will find the solutions of Important Question bank given below.

We hope that this question bank will help you a little for your exam preparation.

Important Questions Bank

Question 2. Choose the correct option and rewrite the statement:

(a) The number of electrons in the outermost shell of alkali metals is…….

(a) 1

(b) 2

(c) 3

(d) 7

Answer: (a) 1

(b) Alkaline earth metals have valency 2. This means that their position in the modern periodic table is in…….

(a) Group 2

(b) Group 16

(c) Period 2

(d) d-block

Answer: (a) Group 2

(c) Molecular formula of the chloride of an element X is XCl. This compound is a solid having high melting point. which of the following elements be present in the same group as X.

(a) Na

(b) Mg

(c) Al

(d) Si

Answer: (a) Na

(d) In which block of the modem periodic table are the nonmetals found?

(a) s-block

(b) p-block

(c) d-block

(d) f-block

Answer: (b) p-block

Question 3. An element has its electron configuration as 2, 8, 2. Now answer the following questions.

a. What is the atomic number of this element?

Answer: The atomic number of this element is 12.

b. What is the group of this element?

Answer: The group of this element is 2.

c. To which period does this element belong?

Answer: This element belongs to period 3.

d. With which of the following elements would this element resemble? (Atomic numbers are given in the brackets)

N(7), Be(4), Ar(18), Cl(17)

Answer: This element resembles Be(4).

Question 4. Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.

a. 3Li, 14Si, 2He, 11Na, 15P which of these elements belong to be period 3?

Answer:

ElementsElectronic configuration
(i) 3Li2,1
(ii) 14Si2, 8,4
(iii) 2He2
(iv) 11Na2, 8, 1
(v) 15P2, 8, 5

Elements belong to the 3rd period: 14Si, 11Na and 15P.

b. 1H, 7N, 20Ca, 16S, 4Be, 18Ar. Which of these elements belong to the second group?

Answer:

ElementsElectronic configuration
(i) 1H1
(ii) 7N2, 5
(iii) 20Ca2, 8, 8, 2
(iv) 16S2, 8, 6
(v) 4Be2, 2
(iv) 18Ar2, 8, 8

Elements belongs to the 2nd group: 4Be and 20Ca.

c. 7N, 6C, 8O, 5B, 13Al Which is the most electronegative element among these?

Answer:

ElementsElectronic configuration
(i) 7N2,5
(ii) 6C2,4
(iii) 802,6
(iv) 5B2,3
(v) 13A12, 8,3

Among these, 8O is the most electronegative element.

d. 4Be, 6C, 8O, 5B, 13Al Which is the most electropositive element among these?

Answer:

ElementsElectronic configuration
(i) 4Be2, 2
(ii) 6C2, 4
(iii) 8O2, 6
(iv) B2, 3
(v) 11Al2, 8, 3

Among these, 13Al is the most electropositive element.

e. 11Na, 15P, 17Cl, 14Si, 12Mg which of these has largest atoms?

Answer:

ElementsElectronic configuration
(i) 11Na2, 8, 1
(ii) 15P2, 8, 3
(iii) 17Cl2, 8, 7
(iv) 14Si2, 8, 4
(v) 12Mg2, 8, 2

11Na has the largest atomic size.

f. 19K, 3li, 11Na, 4Be Which of these atoms has smallest atomic radius?

Answer:

ElementsElectronic configuration
(i) 19K2, 8, 8, 1
(ii) 3Li2, 1
(iii) 11Na2, 8, 1
(iv) 4Be2, 2

4Be has smallest atomic radius.

g. 13Al, 14Si, 11Na, 12Mg, 16S Which of the above elements has the highest metallic character?

Answer:

ElementsElectronic configuration
(i) 13Al2, 8, 3
(ii) 14Si2, 8, 4
(iii) 11Na2, 8, 1
(iv) 12Mg2, 8, 2
(v) 16S2, 8, 6

11Na has the highest metallic character.

h. 6C, 3Li, 9F, 7N, 8O Which of the above elements has the highest nonmetallic character?

Answer:

ElementsElectronic configuration
(i) 6C2, 4
(ii) 3Li2, 1
(iii) 9F2, 7
(iv) 7N2, 5
(v) 8O2, 6

9F has the highest non metallic character.

Question 5. write the name and symbol of the element from the description.

a. The atom having the smallest size.

Answer: Helium(He).

b. The atom having the smallest atomic mass.

Answer: Hydrogen(H2).

c. The most electronegative atom.

Answer: Fluorine(F2).

d. The noble gas with the smallest atomic radius.

Answer: Helium(He).

e. The most reactive nonmetal.

Answer: Fluorine(F2).

Question 6. Write short notes.

a. Mendeleev’s periodic law.

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