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Selina solutions for Concise Chemistry Class 10 ICSE chapter 1 - Periodic Table, Periodic Properties and Variations of Properties [Latest edition]

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Concise Chemistry Class 10 ICSE - Shaalaa.com

Chapter 1: Periodic Table, Periodic Properties and Variations of Properties

Exercise - 1

Exercise - 1 [Pages 17 - 18]

Selina solutions for Concise Chemistry Class 10 ICSE Chapter 1 Periodic Table, Periodic Properties and Variations of Properties Exercise - 1 [Pages 17 - 18]

Exercise - 1 | Q 1 | Page 17

What is the significance of atomic number in the modern Periodic Table?

Exercise - 1 | Q 2.1 | Page 17

Arrange the following as per instruction given in the bracket.

Mg, Cl, Na, S, Si (decreasing order of atomic size) 

Exercise - 1 | Q 2.2 | Page 17

Arrange the following as per instruction given in the bracket.

Cs, Na, Li, K, Rb (increasing metallic character) 

Exercise - 1 | Q 2.3 | Page 17

Arrange the following as per instruction given in the bracket

Na, K, Cl, S, Si (increasing ionisation potential ) 

Exercise - 1 | Q 2.4 | Page 17

Arrange the following as per instruction given in the bracket.

Cl, F, Br, I (increasing electron affinity)

Exercise - 1 | Q 2.5 | Page 17

Arrange the following as per instruction given in the bracket.

Cs, Na, Li, K, Rb (decreasing electronegativity) 

Exercise - 1 | Q 2.6 | Page 17

Arrange the following as per instruction given in the bracket.

K, Pb, Ca, Zn (increasing reactivity ) 

Exercise - 1 | Q 2.7 | Page 17

Arrange the following as per instruction given in the bracket. 

Li, K, Na, H ( decreasing order of their potential ionisation ) 

Exercise - 1 | Q 3.1 | Page 18

Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.

Which of these have physical and chemical properties resembling chlorine.

Exercise - 1 | Q 3.2 | Page 18

Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.

Which is more electronegative than chlorine

Exercise - 1 | Q 4 | Page 18

First ionization enthalpy of two elements X and Y are 500 KJ  mol-1 and 375 KJ mol-1 respectively. Comment about their relative position in a group as well as in a period. 

Exercise - 1 | Q 5.1 | Page 18

Arrange the following in order of increasing radii:

CI- , CI 

Exercise - 1 | Q 5.2 | Page 18

Arrange the following in order of increasing radii: 

 Mg2+, Mg, Mg

Exercise - 1 | Q 5.3 | Page 18

Arrange the following in order of increasing radii:

N, O, P 

Exercise - 1 | Q 6.1 | Page 18

Which element from the following has the highest ionization energy?
Explain your choice.

P, Na, CI

Exercise - 1 | Q 6.2 | Page 18

Which element from the following has the highest ionization energy?
Explain your choice.

F, O, Ne

Exercise - 1 | Q 6.3 | Page 18

Which element from the following has the highest ionization energy?
Explain your choice.

Ne, He, Ar

Exercise - 1 | Q 7 | Page 18

The electronegativities(according to Pauling) of the elements in period 3 of the periodic table are as follows with elements arranged in alphabetical order:

Al

Cl

Mg

Na

P

S

Si

1.5

3

1.2

0.9

2.1

2.5

1.8

Arrange the elements in the order in which they occur in the periodic table from left to right.

(The group 1 element first, followed by the group 2 element and so on, up to group 7).

Exercise - 1 | Q 8.1 | Page 18

Choose the word or phrase from the bracket which correctly complete each of the following statement: 

The element below sodium in the same group would be expected to have a ............... (lower/higher) electro-negativity than sodium, and the element above chlorine would be expected to have a ................. (lower/higher) ionisation potential than chlorine.

Exercise - 1 | Q 8.2 | Page 18

Choose the word or phrase from the bracket which correctly complete the following statement:  

On moving from left to right in a given period, the number of shells ................ .

  • remains the same

  • increases

  • decreases

Exercise - 1 | Q 8.3 | Page 18

Choose the word or phrase from the bracket which correctly complete the following statement:   

On moving down a group, the number of valence electrons .................. .

  • remains the same

  • increases

  • decreases

Exercise - 1 | Q 8.4 | Page 18

Choose the word or phrase from the bracket which correctly complete each of the following statement: 

Metals are good ................. (oxidising agents/reducing agents) because they are electron ............. (acceptors/donors). 

Exercise - 1 | Q 9.1 | Page 18

Refering to changes in the properties of elements on moving from left to right across a period of the periodic table. Choose the correct answer. 

The non-metallic character of the elements : 

  • Decreases

  • Increases

  • Remains the same

  • Depends on the period

Exercise - 1 | Q 9.2 | Page 18

Refering to changes in the properties of elements on moving from left to right across a period of the periodic table. Choose the correct answer. 

The electronegativity

  •  Depends on the number of valence electrons

  •  Remains the same

  • Decreases

  •  Increases

Exercise - 1 | Q 9.3 | Page 18

Refering to changes in the properties of elements on moving from left to right across a period of the periodic table. Choose the correct answer. 

The ionization potential : 

  • goes up and down

  •  Decreases

  • Increases

  •  Remains the same

Exercise - 1 | Q 9.4 | Page 18

Refering to changes in the properties of elements on moving from left to right across a period of the periodic table. Choose the correct answer. 

The atomic size :

  • Decreases

  •  Increases

  •  Remains the same

  •  Sometimes increases and sometimes decreases 

Exercise - 1 | Q 9.5 | Page 18

Refering to changes in the properties of elements on moving from left to right across a period of the periodic table. Choose the correct answer. 

The electron affinity of elements in group 1 to 7 :

  • Goes up and then down

  •  Decreases and then increases

  •  Increases

  • Decreases

Exercise - 1 | Q 10.1 | Page 18

The elements of one short period of the periodic table are given below in order from left to right: 

Li Be B C O F Ne

To which period do these elements belong? 

Exercise - 1 | Q 10.2 | Page 18

The elements of one short period of the periodic table are given below in order from left to right: 

Li Be B C O F Ne 

One element of this period is missing. Which is the missing element and where should it be placed? 

Exercise - 1 | Q 10.3 | Page 18

The elements of one short period of the periodic table are given below in order from left to right: 

Li Be B C O F Ne 

Place the three elements: Fluorine, Beryllium and nitrogen in the order of increasing electronegativity

Exercise - 1 | Q 10.4 | Page 18

The elements of one short period of the periodic table are given below in order from left to right: 

Li Be B C O F Ne 

Which one of the above element belongs to the halogen series?

Exercise - 1 | Q 11 | Page 18

With reference to the variation of properties in the Periodic table, which of the following is generally true?

  • Atomic size increases from left to right across a period.

  • Ionization potential increases from left to right across a period.

  • Electron affinity increases going down a group.

  • Electro-negativity increases going down a group. 

Exercise - 1 | Q 12 | Page 18

Atomic numbers of element A, B, C, D, E, F are 8, 7, 11, 12, 13 and 9 respectively . State the type of ions they form. 

Exercise - 1 | Q 13.1 | Page 18

Formula of ion of A is A2+ . Element A probably belongs to ______ group.

Exercise - 1 | Q 13.2 | Page 18

In a period, increase in electron affinity increases  ........... (oxidation /reduction). 

Exercise - 1 | Q 13.3 | Page 18

On descending a group , .................... in ionisation potential as well as electron affinity ................... oxidising capacity.

  • increase

  • decrease

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Chapter 1: Periodic Table, Periodic Properties and Variations of Properties

Exercise - 1
Concise Chemistry Class 10 ICSE - Shaalaa.com

Selina solutions for Concise Chemistry Class 10 ICSE chapter 1 - Periodic Table, Periodic Properties and Variations of Properties

Selina solutions for Concise Chemistry Class 10 ICSE chapter 1 (Periodic Table, Periodic Properties and Variations of Properties) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Chemistry Class 10 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Chemistry Class 10 ICSE chapter 1 Periodic Table, Periodic Properties and Variations of Properties are Periodic Properties-chemical Reactivity, Relation Between Atomic Number for Light Elements (Proton Number) and Atomic Mass for Light Elements, Periodicity on the Basis of Atomic Number for Elements, Periodic Properties - Electronegativity, Periodic Properties - Electron Affinity, Periodic Properties - Ionisation Potential, Periodic Properties - Metallic Character, Periodic Properties - Atomic Size, Periodic Properties and Variations of Properties:- Physical and Chemical, Periodic Properties -physical Properties.

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