The Periodic Table Exe-5C Very Short Answer Chemistry Class-9 ICSE Selina Publishers

The Periodic Table Exe-5C Very Short Answer Chemistry Class-9 ICSE Selina Publishers Solutions Chapter-5. Step By Step ICSE Selina Concise Solutions of Chapter-5 The Periodic Table with All Exercise including MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type, Numerical and Structured/Application Questions Solved . Visit official Website CISCE for detail information about ICSE Board Class-9.

The Periodic Table Exe-5C Very Short Answer Chemistry Class-9 ICSE Concise Selina Publishers

Board ICSE
Publications Selina Publication
Subject Chemistry
Class 9th
Chapter-5 The Periodic Table
Book Name Concise
Topics Solution of Exercise – 5C Very Short Answer type
Academic Session 2023-2024

Exercise – 5C Very Short Answer type

The Periodic Table Class-9 Chemistry Concise Solutions  

Page-100

Question 1.

Match column A with column B

Column A Column B
(a) Element short by 1 electron in octet (i) Transition elements
(b) Highly reactive metals (ii) Noble gases
(c) Non-reactive elements (iii) Alkali metals
(d) Elements of groups 3 to 12 (iv) Alkaline earth metals
(e) Radioactive elements (v) Halogens
(f) Elements with 2 electrons in the outermost orbit (vi)Actinides

 

Answer:

Column A Answers
(a) Element short by 1 electron in octet (v) Halogens
(b) Highly reactive metals (iii) Alkali metals
(c) Non-reactive elements (ii) Noble gases
(d) Elements of Groups 3 to 12 (i) Transition elements
(e) Radioactive elements (vi) Actinides
(f) Elements with 2 electrons in the outermost orbit (iv) Alkali earth metals

 

Question 2.

Write down the word that will correctly complete the following sentences:

(a) Relative atomic mass of a light element up to calcium is approximately …………… its atomic number.

(b) The horizontal rows in a periodic table are called ……………

(c) Going across a period left to right, atomic size ……………

(d) Moving left to right in the second period, number of valence electrons ……………

(e) Moving down in the second group, number of valence electrons ……………

Answer:

(a) Relative atomic mass of a light element up to calcium is approximately twice its atomic number.

(b) The horizontal rows in a periodic table are called periods.

(c) Going across a period left to right, atomic size decreases.

(d) Moving left to right in the second period, number of valence electrons increases

(e) Moving down in the second group, number of valence electrons remains same

Question 3.

Name or state the following with reference to the elements of the first three periods of the periodic table.

(a) Noble gas with duplet arrangement of electrons.

(b) Metalloid in Period 3.

(c) Valency of elements in Group 14 and 15.

(d) Noble gas having electronic configuration 2, 8, 8.

(e) Group whose elements have zero valency.

(f) A covalent compound formed by an element in period 2 and a halogen.

(g) Non-metallic element present in Period 3 of Groups 15 and 16.

(h) An electrovalent compound formed by an alkaline earth metal and a halogen.

(i) Bridge elements of Period 3 of Group 1, 2 and 3.

(j) Alkali metal in Period 3 that dissolves in water giving a strong alkali.

(k) Typical elements of Groups 14 and 15.

(l) Alkaline earth metal in Period 3

Answer:

(a) Helium (He)

(b) Silicon (Si)

(c) 4, 3

(d) Argon (Ar)

(e) Group 18 — Noble gases

(f) Carbon tetrachloride (CCl4)

(g) Phosphorus and sulphur

(h) Sodium chloride (NaCl)

(i) Lithium (Li) and Magnesium (Mg);
Beryllium (Be) and Aluminium (Al);
Boron (B) and Silicon (Si)

(j) Sodium (Na)

(k) Silicon (Si) and phosphorus (P).

(l) Magnesium (Mg)

Question 4.

Name the gas used in

(a) filling balloons

(b) light bulbs

(c) bright coloured advertising light works

Answer:

(a) Helium

(b) Argon

(c) Neon

Question 5.

(a) Name the method by which alkali metals can be extracted.

(b) What is the colour of the flame of sodium and potassium?

Answer:

(a) Electrolysis of their molten state.

(b) Flame of sodium is golden yellow, and potassium is lilac.

—  : End of The Periodic Table Exe-5C Very Short Answer Class-9 ICSE Chemistry Solutions :–

Return to  Return to Concise Selina ICSE Chemistry Class-9 

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