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Chapters
2: Chemical Bonding
3: Acids, Bases and Salts
4: Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide
5: Mole concept and Stoichiometry
6: Electrolysis
7: Metallurgy
8: Study of Compounds - Hydrogen Chloride
9: Study of Compounds - Ammonia
10: Study of Compounds - Nitric Acid
11: Sulphuric Acid
12: Organic Chemistry
13: Practical Work
![Selina solutions for Concise Chemistry [English] Class 10 ICSE chapter 1 - Periodic Table, Periodic Properties and Variations of Properties - Shaalaa.com](/images/concise-chemistry-english-class-10-icse_6:654d3cd91177441db9833c3c89eccd66.jpg "Selina solutions for Concise Chemistry [English] Class 10 ICSE chapter 1 - Periodic Table, Periodic Properties and Variations of Properties")
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Solutions for Chapter 1: Periodic Table, Periodic Properties and Variations of Properties
Below listed, you can find solutions for Chapter 1 of CISCE Selina for Concise Chemistry [English] Class 10 ICSE.
Selina solutions for Concise Chemistry [English] Class 10 ICSE 1 Periodic Table, Periodic Properties and Variations of Properties Exercise 1 [Pages 17 - 18]
What is the significance of atomic numbers in the modern Periodic Table?
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
Arrange the following as per instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing metallic character)
Arrange the following as per instruction given in the bracket
Na, K, Cl, S, Si (increasing ionisation potential)
Arrange the following as per instruction given in the bracket.
Cl, F, Br, I (increasing electron affinity)
Arrange the following as per instruction given in the bracket.
Cs, Na, Li, K, Rb (decreasing electronegativity)
Arrange the following as per instruction given in the bracket.
K, Pb, Ca, Zn (increasing reactivity)
Arrange the following as per instruction given in the bracket.
Li, K, Na, H ( decreasing order of their potential ionisation )
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.
Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which is more electronegative than chlorine?
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.
Arrange the following in order of increasing radii:
CI- , CI
Arrange the following in order of increasing radii:
Mg2+, Mg, Mg+
Arrange the following in order of increasing radii:
N, O, P
Which element from the following has the highest ionization energy?
Explain your choice.
P, Na, CI
Which element from the following has the highest ionization energy?
Explain your choice.
F, O, Ne
Which element from the following has the highest ionization energy?
Explain your choice.
Ne, He, Ar
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 | 3.0 | 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).
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) ionization potential than chlorine.
On moving from left to right in a given period, the number of shells ______.
remains the same
increases
decreases
On moving down a group, the number of valence electrons ______.
remains the same
increases
decreases
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).
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
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The electronegativity:
Depends on the number of valence electrons
Remains the same
Decreases
Increases
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The ionization potential:
goes up and down
Decreases
Increases
Remains the same
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The atomic size:
Decreases
Increases
Remains the same
Sometimes increases and sometimes decreases
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The electron affinity of elements in groups 1 to 7:
Goes up and then down
Decreases and then increases
Increases
Decreases
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?
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?
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.
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 elements belongs to the halogen series?
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.
Atomic numbers of elements A, B, C, D, E, F are 8, 7, 11, 12, 13 and 9 respectively. State the type of ions they form.
Formula of ion of A is A2+. Element A probably belongs to ______ group.
In a period, increase in electron affinity increases ______.
oxidation
reduction
On descending a group, ______ in ionisation potential as well as electron affinity ______ oxidising capacity.
increase
decrease
Solutions for 1: Periodic Table, Periodic Properties and Variations of Properties
Selina solutions for Concise Chemistry [English] Class 10 ICSE chapter 1 - Periodic Table, Periodic Properties and Variations of Properties
Shaalaa.com has the CISCE Mathematics Concise Chemistry [English] Class 10 ICSE CISCE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Selina solutions for Mathematics Concise Chemistry [English] Class 10 ICSE CISCE 1 (Periodic Table, Periodic Properties and Variations of Properties) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Concise Chemistry [English] Class 10 ICSE chapter 1 Periodic Table, Periodic Properties and Variations of Properties are Group I (Alkali Metals), Group VIIA Or Group 17 (The Halogens), History of Periodic Table: Early Attempts at the Classification of Elements, Dobereiner’s Triads, Newland's Law of Octaves, Mendeleev’s Periodic Table, The Modern Periodic Table, Periodic Properties, Shells (Orbits), Valency, Atomic Radius Or Atomic Size, Metallic and Non-metallic Characters, Ionisation Potential (Ionisation Energy), Electron Affinity, Electronegativity, Atomic Number (Z), Mass Number (A), and Number of Neutrons (n), Atomic Mass, Study of Specific Groups in Periodic Table, Chemical Reactivity, Group I (Alkali Metals), Group VIIA Or Group 17 (The Halogens), History of Periodic Table: Early Attempts at the Classification of Elements, Dobereiner’s Triads, Newland's Law of Octaves, Mendeleev’s Periodic Table, The Modern Periodic Table, Periodic Properties, Shells (Orbits), Valency, Atomic Radius Or Atomic Size, Metallic and Non-metallic Characters, Ionisation Potential (Ionisation Energy), Electron Affinity, Electronegativity, Atomic Number (Z), Mass Number (A), and Number of Neutrons (n), Atomic Mass, Study of Specific Groups in Periodic Table, Chemical Reactivity.
Using Selina Concise Chemistry [English] Class 10 ICSE solutions Periodic Table, Periodic Properties and Variations of Properties exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Selina Solutions are essential questions that can be asked in the final exam. Maximum CISCE Concise Chemistry [English] Class 10 ICSE students prefer Selina Textbook Solutions to score more in exams.
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